Document union_room.c

1 files changed, 1339 insertions, 1301 deletions

diff --git a/src/union_room.c b/src/union_room.c
index cd45907f5..28e1139dd 100644
--- a/src/union_room.c
+++ b/src/union_room.c
@@ -41,6 +41,7 @@
 #include "trade.h"
 #include "trainer_card.h"
 #include "union_room.h"
+#include "union_room_battle.h"
 #include "union_room_chat.h"
 #include "union_room_player_avatar.h"
 #include "window.h"
@@ -54,156 +55,171 @@
 #include "constants/species.h"
 #include "constants/union_room.h"
 
-EWRAM_DATA u8 sUnionRoomPlayerName[12] = {};
-EWRAM_DATA u8 gUnknown_02022C2C = 0;
-EWRAM_DATA u8 gUnknown_02022C2D = 0;
-EWRAM_DATA union UnkUnion_Main gUnknown_02022C30 = {};
-EWRAM_DATA u32 gFiller_02022C34 = 0;
-EWRAM_DATA struct GFtgtGnameSub gUnknown_02022C38 = {};
+static EWRAM_DATA u8 sUnionRoomPlayerName[12] = {};
+EWRAM_DATA u8 gPlayerCurrActivity = 0;
+static EWRAM_DATA u8 sPlayerActivityGroupSize = 0;
+static EWRAM_DATA union WirelessLink_Main sWirelessLinkMain = {};
+static EWRAM_DATA u32 sUnused = 0;
+EWRAM_DATA struct GFtgtGnameSub gPartnerTgtGnameSub = {};
 EWRAM_DATA u16 gUnionRoomOfferedSpecies = 0;
 EWRAM_DATA u8 gUnionRoomRequestedMonType = 0;
 static EWRAM_DATA struct UnionRoomTrade sUnionRoomTrade = {};
 
 // IWRAM vars
-static struct UnkStruct_Leader *gUnknown_03000DA0;
-static struct UnkStruct_Group *gUnknown_03000DA4;
-static struct UnkStruct_URoom *gUnknown_03000DA8;
+static struct WirelessLink_Leader *sLeader;
+static struct WirelessLink_Group *sGroup;
+static struct WirelessLink_URoom *sURoom;
 
 // this file's functions
-void sub_80173E0(u8 windowId, u8 arg1, const u8 *str, u8 arg3, u8 arg4, u8 arg5);
-u16 ReadAsU16(const u8 *ptr);
-void sub_8012780(u8 taskId);
-void sub_80134E8(u8 taskId);
-void sub_8013C7C(u8 taskId);
-void sub_8014A40(u8 taskId);
-void sub_8014F48(u8 taskId);
-void sub_80152F4(u8 taskId);
-void sub_80156E0(u8 taskId);
-void sub_80175EC(struct UnkStruct_Main4 *arg0, u8 count);
-void sub_8017580(struct UnkStruct_x20 *arg0, u8 count);
-u8 sub_8016FC0(struct UnkStruct_Main4 *arg0, u32 arg1);
-u8 sub_8016FF0(struct UnkStruct_Main4 *arg0, u32 arg1);
-bool8 PrintOnTextbox(u8 *textState, const u8 *str);
-bool8 sub_801320C(struct UnkStruct_Leader *data, u32 arg1, u32 arg2);
-u8 sub_8013398(struct UnkStruct_Main0 *arg0);
-s8 sub_80170B8(u8 *arg0, bool32 arg1);
-void sub_8018404(u8 *dest, struct UnkStruct_x20 *arg1);
-void sub_8012F64(struct UnkStruct_Leader *data);
-void sub_80149C4(void);
-u8 sub_80132D4(struct UnkStruct_Main0 *arg0);
-void sub_80178A0(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
-u32 sub_80176E4(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1);
-u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2);
-u8 sub_8013E44(void);
-u32 sub_8013B8C(struct UnkStruct_Group *arg0, s32 id);
-void sub_8013BD8(struct UnkStruct_Group *arg0, s32 id);
-void sub_80173D4(void);
-void sub_80177B8(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
-bool32 sub_8017678(struct UnkStruct_Shared *arg0, struct UnkStruct_Shared *arg1);
+static void UR_AddTextPrinterParameterized(u8 windowId, u8 arg1, const u8 *str, u8 arg3, u8 arg4, u8 arg5);
+static u16 ReadAsU16(const u8 *ptr);
+static void Task_TryBecomeLinkLeader(u8 taskId);
+static void Task_TryJoinLinkGroup(u8 taskId);
+static void Task_ListenToWireless(u8 taskId);
+static void Task_MEvent_Leader(u8 taskId);
+static void Task_CardOrNewsWithFriend(u8 taskId);
+static void Task_CardOrNewsOverWireless(u8 taskId);
+static void Task_RunUnionRoom(u8 taskId);
+static void ClearUnkStruct_x1CArray(struct UnkStruct_Main4 *arg0, u8 count);
+static void ClearUnkStruct_x20Array(struct UnkStruct_x20 *arg0, u8 count);
+static u8 CreateTask_ListenForPartnersWithCompatibleSerialNos(struct UnkStruct_Main4 *arg0, u32 arg1);
+static u8 CreateTask_ListenForPartnersWithSerial7F7D(struct UnkStruct_Main4 *arg0, u32 arg1);
+static bool8 PrintOnTextbox(u8 *textState, const u8 *str);
+static bool8 Leader_SetStateIfMemberListChanged(struct WirelessLink_Leader *data, u32 arg1, u32 arg2);
+static u8 sub_8013398(struct UnkStruct_Main0 *arg0);
+static s8 UnionRoomHandleYesNo(u8 *arg0, bool32 arg1);
+static void IntlConvPartnerUname7(u8 *dest, struct UnkStruct_x20 *arg1);
+static void Leader_DestroyResources(struct WirelessLink_Leader *data);
+static void CreateTask_RunScriptAndFadeToActivity(void);
+static u8 LeaderUpdateGroupMembership(struct UnkStruct_Main0 *arg0);
+static void PrintGroupMemberCandidateOnWindowWithColor(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
+static u32 Findx20Inx1CArray(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1);
+static u8 Appendx1Ctox20(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2);
+static u8 GetNewLeaderCandidate(void);
+static u32 IsTryingToTradeAcrossVersionTooSoon(struct WirelessLink_Group *data, s32 id);
+static void AskToJoinRfuGroup(struct WirelessLink_Group *data, s32 id);
+static void JoinGroup_EnableScriptContexts(void);
+static void PrintUnionRoomGroupOnWindow(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
+static bool32 AreUnionRoomPlayerGnamesDifferent(struct WirelessGnameUnamePair *arg0, struct WirelessGnameUnamePair *arg1);
 static u32 GetPartyPositionOfRegisteredMon(struct UnionRoomTrade *arg0, u8 multiplayerId);
 static void ResetUnionRoomTrade(struct UnionRoomTrade *arg0);
-void sub_801AC54(void);
-void sub_80149D8(void);
-void MG_DrawTextBorder(u8 windowId);
-s8 mevent_message_print_and_prompt_yes_no(u8 *textState, u8 *arg1, u8 arg2, const u8 *str);
-bool32 sub_8016F1C(struct GFtgtGname *arg0, s16 arg1);
-u8 sub_8016DF0(struct UnkStruct_Main4 *arg0, struct UnkStruct_Main4 *arg1, u32 arg2);
-void sub_8019F2C(void);
+static void CreateTask_StartActivity(void);
+static bool32 GetGnameWonderFlagByLinkGroup(struct GFtgtGname *arg0, s16 arg1);
+static u8 CreateTask_SearchForChildOrParent(struct UnkStruct_Main4 *arg0, struct UnkStruct_Main4 *arg1, u32 arg2);
 static bool32 RegisterTradeMonAndGetIsEgg(u32 monId, struct UnionRoomTrade *trade);
 static void RegisterTradeMon(u32 monId, struct UnionRoomTrade *arg1);
-void sub_80181CC(void);
-bool32 sub_8017940(void);
-u8 sub_8016B00(void);
-void sub_801A274(struct UnkStruct_URoom *arg0);
-bool32 sub_8017FD8(struct UnkStruct_URoom *arg0);
-void sub_801689C(struct UnkStruct_URoom *arg0);
-u8 sub_80181DC(struct UnkStruct_URoom *arg0);
-bool32 sub_80168DC(struct UnkStruct_URoom *arg0);
-bool32 sub_801704C(void);
-s32 sub_8017CF8(s32 arg1, struct UnkStruct_Main0 *arg0);
-s32 sub_80179D4(struct UnkStruct_Main0 *arg0, u8 arg1, u8 arg2, u32 playerGender);
-void sub_801818C(bool32 arg0);
-s32 sub_8017178(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate);
-s32 sub_80172A0(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *arg6);
-s32 sub_8017CB0(struct UnkStruct_x20 * arg, s32 arg1);
-bool32 HasAtLeastTwoMonsOfLevel30OrLower(void);
-u32 sub_8017984(s32 arg0);
-void sub_8018220(u8 *unused, struct UnkStruct_URoom *arg1, bool8 arg2);
-void sub_8017D9C(u8 *dst, s32 arg1, u32 playerGender);
-u32 sub_80179AC(struct UnkStruct_x20 *arg0);
-void sub_8017E00(u8 *dst, u8 arg1);
-void sub_80173B0(void);
-s32 sub_8017D04(u32 type, u32 species);
-bool32 sub_8017020(const u8 *src);
-u8 sub_8019BA8(struct UnkStruct_8019BA8 * );
-s32 sub_8017EA0(u8 *dst, u32 gender, u16 *arg2, struct UnkStruct_URoom *arg3);
-void sub_801697C(u8 taskId);
-bool8 sub_8017630(struct UnkStruct_Shared* arg0, const struct UnkStruct_Shared* arg1);
-void sub_8013278(u8 windowId, s32 itemId, u8 y);
-void sub_8013DF4(u8 windowId, s32 itemId, u8 y);
-void sub_8017BE8(u8 windowId, s32 itemId, u8 y);
-void nullsub_14(u8 windowId, s32 itemId, u8 y);
+static void UR_EnableScriptContext2AndFreezeObjectEvents(void);
+static bool32 PlayerIsTalkingToUnionRoomAide(void);
+static u8 HandlePlayerListUpdate(void);
+static bool32 PollPartnerYesNoResponse(struct WirelessLink_URoom *data);
+static void ReceiveUnionRoomActivityPacket(struct WirelessLink_URoom *data);
+static u8 GetActivePartnerSpriteGenderParam(struct WirelessLink_URoom *data);
+static bool32 UnionRoom_HandleContactFromOtherPlayer(struct WirelessLink_URoom *data);
+static bool32 UR_RunTextPrinters_CheckPrinter0Active(void);
+static s32 GetUnionRoomPlayerGender(s32 arg1, struct UnkStruct_Main0 *arg0);
+static s32 UnionRoomGetPlayerInteractionResponse(struct UnkStruct_Main0 *arg0, u8 arg1, u8 arg2, u32 playerGender);
+static void HandleCancelTrade(bool32 arg0);
+static s32 ListMenuHandler_AllItemsAvailable(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate);
+static s32 TradeBoardMenuHandler(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *arg6);
+static s32 GetIndexOfNthTradeBoardOffer(struct UnkStruct_x20 * arg, s32 arg1);
+static bool32 HasAtLeastTwoMonsOfLevel30OrLower(void);
+static u32 GetResponseIdx_InviteToURoomActivity(s32 arg0);
+static void ViewURoomPartnerTrainerCard(u8 *unused, struct WirelessLink_URoom *data, bool8 arg2);
+static void GetURoomActivityRejectMsg(u8 *dst, s32 arg1, u32 playerGender);
+static u32 ConvPartnerUnameAndGetWhetherMetAlready(struct UnkStruct_x20 *arg0);
+static void GetURoomActivityStartMsg(u8 *dst, u8 arg1);
+static void UR_ClearBg0(void);
+static s32 IsRequestedTypeOrEggInPlayerParty(u32 type, u32 species);
+static bool32 UR_PrintFieldMessage(const u8 *src);
+static s32 GetChatLeaderActionRequestMessage(u8 *dst, u32 gender, u16 *arg2, struct WirelessLink_URoom *data);
+static void Task_InitUnionRoom(u8 taskId);
+static bool8 AreGnameUnameDifferent(struct WirelessGnameUnamePair* arg0, const struct WirelessGnameUnamePair* arg1);
+static void ItemPrintFunc_PossibleGroupMembers(u8 windowId, s32 itemId, u8 y);
+static void ListMenuItemPrintFunc_UnionRoomGroups(u8 windowId, s32 itemId, u8 y);
+static void TradeBoardListMenuItemPrintFunc(u8 windowId, s32 itemId, u8 y);
+static void nullsub_14(u8 windowId, s32 itemId, u8 y);
 
 #include "data/union_room.h"
 
 // code
-void sub_80124EC(u8 windowId, u8 arg1, u8 stringId)
+static void PrintNumPlayersWaitingForMsg(u8 windowId, u8 capacityCode, u8 stringId)
 {
     FillWindowPixelBuffer(windowId, PIXEL_FILL(1));
-    switch (arg1 << 8)
+    switch (capacityCode << 8)
     {
-    case 0x200:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[0][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(0, 2):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[0][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
-    case 0x400:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[1][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(0, 4):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[1][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
-    case 0x2500:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[2][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(2, 5):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[2][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
-    case 0x3500:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[3][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(3, 5):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[3][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
-    case 0x2400:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[4][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(2, 4):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[4][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
     }
 
     CopyWindowToVram(windowId, 2);
 }
 
-void sub_80125BC(u8 windowId)
+static void PrintPlayerNameAndIdOnWindow(u8 windowId)
 {
     u8 text[30];
     u8 *txtPtr;
 
-    sub_80173E0(windowId, 1, gSaveBlock2Ptr->playerName, 0, 1, 0);
+    UR_AddTextPrinterParameterized(windowId, 1, gSaveBlock2Ptr->playerName, 0, 1, UR_COLOR_DKE_WHT_LTE);
     txtPtr = StringCopy(text, sText_ID);
     ConvertIntToDecimalStringN(txtPtr, ReadAsU16(gSaveBlock2Ptr->playerTrainerId), STR_CONV_MODE_LEADING_ZEROS, 5);
-    sub_80173E0(windowId, 1, text, 0, 0x11, 0);
+    UR_AddTextPrinterParameterized(windowId, 1, text, 0, 0x11, UR_COLOR_DKE_WHT_LTE);
 }
 
-void sub_801262C(u8 *dst, u8 caseId)
+static void StringExpandPlaceholders_AwaitingCommFromAnother(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 1 ... 4:
-    case 9 ... 11:
-    case 14 ... 16:
-    case 21 ... 28:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_BATTLE_TOWER:
+    case ACTIVITY_BATTLE_TOWER_OPEN:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_WONDER_CARD2:
+    case ACTIVITY_WONDER_NEWS2:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         // UB: argument *dst isn't used, instead it always prints to gStringVar4
         StringExpandPlaceholders(gStringVar4, sText_AwaitingCommunication);
         break;
     }
 }
 
-bool32 sub_80126CC(u32 caseId)
+static bool32 IsActivityWithVariableGroupSize(u32 caseId)
 {
     switch (caseId)
     {
-    case 9 ... 11:
-    case 15 ... 16:
-    case 23 ... 27:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         return TRUE;
     default:
         return FALSE;
@@ -213,49 +229,49 @@ bool32 sub_80126CC(u32 caseId)
 void TryBecomeLinkLeader(void)
 {
     u8 taskId;
-    struct UnkStruct_Leader *dataPtr;
+    struct WirelessLink_Leader *data;
 
-    taskId = CreateTask(sub_8012780, 0);
-    gUnknown_02022C30.leader = dataPtr = (void*)(gTasks[taskId].data);
-    gUnknown_03000DA0 = dataPtr;
+    taskId = CreateTask(Task_TryBecomeLinkLeader, 0);
+    sWirelessLinkMain.leader = data = (void*)(gTasks[taskId].data);
+    sLeader = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
+    data->state = 0;
+    data->textState = 0;
     gSpecialVar_Result = 0;
 }
 
-void sub_8012780(u8 taskId)
+static void Task_TryBecomeLinkLeader(u8 taskId)
 {
     u32 id, val;
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
 
     switch (data->state)
     {
     case 0:
         if (gSpecialVar_0x8004 == LINK_GROUP_BATTLE_TOWER && gSaveBlock2Ptr->frontier.lvlMode == FRONTIER_LVL_OPEN)
             gSpecialVar_0x8004++;
-        gUnknown_02022C2C = gUnknown_082F00C4[gSpecialVar_0x8004];
-        gUnknown_02022C2D = gUnknown_082F00C4[gSpecialVar_0x8004] >> 8;
-        sub_8010F84(gUnknown_02022C2C, 0, 0);
-        sub_800B488();
+        gPlayerCurrActivity = sLinkGroupToActivityAndCapacity[gSpecialVar_0x8004];
+        sPlayerActivityGroupSize = sLinkGroupToActivityAndCapacity[gSpecialVar_0x8004] >> 8;
+        SetHostRFUtgtGname(gPlayerCurrActivity, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C10(gUnknown_02022C2D & 0xF);
+        InitializeRfuLinkManager_LinkLeader(sPlayerActivityGroupSize & 0xF);
         data->state = 3;
         break;
     case 3:
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0xA0);
-        data->field_8 = AllocZeroed(0xA0);
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 5);
-        sub_800DF90(&data->field_0->arr[0].unk.field_0, data->field_0->arr[0].unk.playerName);
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(5 * sizeof(struct UnkStruct_x20));
+        data->field_8 = AllocZeroed(5 * sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 5);
+        LinkRfu3_SetGnameUnameFromStaticBuffers(&data->field_0->arr[0].gname_uname.gname, data->field_0->arr[0].gname_uname.playerName);
         data->field_0->arr[0].field_18 = 0;
-        data->field_0->arr[0].field_1A_0 = 1;
+        data->field_0->arr[0].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
         data->field_0->arr[0].field_1A_1 = 0;
         data->field_0->arr[0].field_1B = 0;
-        data->field_17 = sub_8016FC0(data->field_4, 0xFF);
-        data->field_10 = AddWindow(&gUnknown_082F00BC);
-        switch (gUnknown_02022C2D & 0xF)
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, 0xFF);
+        data->bButtonCancelWindowId = AddWindow(&sWindowTemplate_BButtonCancel);
+        switch (sPlayerActivityGroupSize & 0xF)
         {
         case 2:
         case 3:
@@ -266,41 +282,41 @@ void sub_8012780(u8 taskId)
             data->listWindowId = AddWindow(&gUnknown_082F0124);
             break;
         }
-        data->field_11 = AddWindow(&gUnknown_082F012C);
+        data->nPlayerModeWindowId = AddWindow(&sWindowTemplate_NumPlayerMode);
 
-        FillWindowPixelBuffer(data->field_10, PIXEL_FILL(2));
-        sub_80173E0(data->field_10, 0, sText_BButtonCancel, 8, 1, 4);
-        PutWindowTilemap(data->field_10);
-        CopyWindowToVram(data->field_10, 2);
+        FillWindowPixelBuffer(data->bButtonCancelWindowId, PIXEL_FILL(2));
+        UR_AddTextPrinterParameterized(data->bButtonCancelWindowId, 0, sText_BButtonCancel, 8, 1, 4);
+        PutWindowTilemap(data->bButtonCancelWindowId);
+        CopyWindowToVram(data->bButtonCancelWindowId, 2);
 
         DrawStdWindowFrame(data->listWindowId, FALSE);
-        gMultiuseListMenuTemplate = gUnknown_082F015C;
+        gMultiuseListMenuTemplate = sListMenuTemplate_PossibleGroupMembers;
         gMultiuseListMenuTemplate.windowId = data->listWindowId;
         data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
-        DrawStdWindowFrame(data->field_11, FALSE);
-        PutWindowTilemap(data->field_11);
-        CopyWindowToVram(data->field_11, 2);
+        DrawStdWindowFrame(data->nPlayerModeWindowId, FALSE);
+        PutWindowTilemap(data->nPlayerModeWindowId);
+        CopyWindowToVram(data->nPlayerModeWindowId, 2);
 
         CopyBgTilemapBufferToVram(0);
-        data->field_13 = 1;
+        data->playerCount = 1;
         data->state = 4;
         break;
     case 4:
-        StringCopy(gStringVar1, sLinkGroupActivityTexts[gUnknown_02022C2C]);
-        if ((gUnknown_02022C2D >> 4) != 0)
+        StringCopy(gStringVar1, sLinkGroupActivityTexts[gPlayerCurrActivity]);
+        if ((sPlayerActivityGroupSize >> 4) != 0)
         {
-            if (data->field_13 > (gUnknown_02022C2D >> 4) - 1 && (gUnknown_02022C2D & 0xF) != 0)
+            if (data->playerCount > (sPlayerActivityGroupSize >> 4) - 1 && (sPlayerActivityGroupSize & 0xF) != 0)
                 StringExpandPlaceholders(gStringVar4, sText_AwaitingLinkPressStart);
             else
                 StringExpandPlaceholders(gStringVar4, sText_AwaitingCommunication);
         }
         else
         {
-            sub_801262C(gStringVar4, gUnknown_02022C2C);
+            StringExpandPlaceholders_AwaitingCommFromAnother(gStringVar4, gPlayerCurrActivity);
         }
 
-        sub_80124EC(data->field_11, gUnknown_02022C2D, data->field_13);
+        PrintNumPlayersWaitingForMsg(data->nPlayerModeWindowId, sPlayerActivityGroupSize, data->playerCount);
         data->state = 5;
         break;
     case 5:
@@ -308,24 +324,24 @@ void sub_8012780(u8 taskId)
             data->state = 6;
         break;
     case 6:
-        sub_801320C(data, 7, 10);
+        Leader_SetStateIfMemberListChanged(data, 7, 10);
         if (gMain.newKeys & B_BUTTON)
         {
-            if (data->field_13 == 1)
+            if (data->playerCount == 1)
                 data->state = 23;
-            else if ((gUnknown_02022C2D & 0xF0) != 0)
+            else if ((sPlayerActivityGroupSize & 0xF0) != 0)
                 data->state = 30;
             else
                 data->state = 19;
         }
-        if ((gUnknown_02022C2D >> 4) != 0
-            && data->field_13 > (gUnknown_02022C2D >> 4) - 1
-            && (gUnknown_02022C2D & 0xF) != 0
+        if ((sPlayerActivityGroupSize >> 4) != 0
+            && data->playerCount > (sPlayerActivityGroupSize >> 4) - 1
+            && (sPlayerActivityGroupSize & 0xF) != 0
             && sub_8012240()
             && gMain.newKeys & START_BUTTON)
         {
             data->state = 15;
-            sub_800EF38();
+            LinkRfu_StopManagerAndFinalizeSlots();
         }
         if (data->state == 6 && sub_80105EC())
         {
@@ -336,20 +352,21 @@ void sub_8012780(u8 taskId)
         if (!sub_80105EC())
         {
             data->state = 6;
-            data->field_13 = sub_8013398(data->field_0);
+            data->playerCount = sub_8013398(data->field_0);
         }
         break;
     case 10:
-        id = ((gUnknown_02022C2C & 0xF) == 2) ? 1 : 0;
+        id = ((gPlayerCurrActivity & 0xF) == 2) ? 1 : 0;
         if (PrintOnTextbox(&data->textState, sPlayerUnavailableTexts[id]))
         {
-            data->field_13 = sub_8013398(data->field_0);
+            data->playerCount = sub_8013398(data->field_0);
             RedrawListMenu(data->listTaskId);
             data->state = 4;
         }
         break;
     case 29:
-        id = ((gUnknown_02022C2D & 0xF) == 2) ? 0 : 1;
+        // Other player canceled.
+        id = ((sPlayerActivityGroupSize & 0xF) == 2) ? 0 : 1;
         if (PrintOnTextbox(&data->textState, sPlayerUnavailableTexts[id]))
         {
             data->state = 21;
@@ -362,19 +379,19 @@ void sub_8012780(u8 taskId)
         }
         break;
     case 11:
-        switch (sub_80170B8(&data->textState, sub_801064C(ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName)))
+        switch (UnionRoomHandleYesNo(&data->textState, TrainerIdAndNameStillInPartnersList(ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName)))
         {
         case 0:
             LoadWirelessStatusIndicatorSpriteGfx();
             CreateWirelessStatusIndicatorSprite(0, 0);
             data->field_19 = 5;
-            sub_8010688(5, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+            SendByteToPartnerByIdAndName(5, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
             data->state = 12;
             break;
         case 1:
         case -1:
             data->field_19 = 6;
-            sub_8010688(6, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+            SendByteToPartnerByIdAndName(6, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
             data->state = 12;
             break;
         case -3:
@@ -383,29 +400,29 @@ void sub_8012780(u8 taskId)
         }
         break;
     case 12:
-        val = sub_8010714(ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+        val = WaitSendByteToPartnerByIdAndName(ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
         if (val == 1)
         {
             if (data->field_19 == 5)
             {
-                data->field_0->arr[data->field_13].field_1B = 0;
+                data->field_0->arr[data->playerCount].field_1B = 0;
                 RedrawListMenu(data->listTaskId);
-                data->field_13++;
-                if (data->field_13 == (gUnknown_02022C2D & 0xF))
+                data->playerCount++;
+                if (data->playerCount == (sPlayerActivityGroupSize & 0xF))
                 {
-                    if ((gUnknown_02022C2D & 0xF0) != 0 || data->field_13 == 4)
+                    if ((sPlayerActivityGroupSize & 0xF0) != 0 || data->playerCount == 4)
                     {
                         data->state = 15;
                     }
                     else
                     {
-                        sub_8018404(gStringVar1, &data->field_0->arr[data->field_13 - 1]);
+                        IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->playerCount - 1]);
                         StringExpandPlaceholders(gStringVar4, sText_AnOKWasSentToPlayer);
                         data->state = 13;
                     }
 
-                    sub_800EF38();
-                    sub_80124EC(data->field_11, gUnknown_02022C2D, data->field_13);
+                    LinkRfu_StopManagerAndFinalizeSlots();
+                    PrintNumPlayersWaitingForMsg(data->nPlayerModeWindowId, sPlayerActivityGroupSize, data->playerCount);
                 }
                 else
                 {
@@ -414,8 +431,8 @@ void sub_8012780(u8 taskId)
             }
             else
             {
-                sub_8011DC0(data->field_0->arr[data->field_13].unk.playerName, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId));
-                data->field_0->arr[data->field_13].field_1A_0 = 0;
+                RequestDisconnectSlotByTrainerNameAndId(data->field_0->arr[data->playerCount].gname_uname.playerName, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId));
+                data->field_0->arr[data->playerCount].groupScheduledAnim = UNION_ROOM_SPAWN_NONE;
                 sub_8013398(data->field_0);
                 RedrawListMenu(data->listTaskId);
                 data->state = 4;
@@ -425,7 +442,7 @@ void sub_8012780(u8 taskId)
         }
         else if (val == 2)
         {
-            sub_8011A64(0, 0);
+            RfuSetErrorStatus(0, 0);
             data->state = 4;
         }
         break;
@@ -434,7 +451,7 @@ void sub_8012780(u8 taskId)
             data->state = 14;
         break;
     case 14:
-        if (++data->field_E > 120)
+        if (++data->delayTimerAfterOk > 120)
             data->state = 17;
         break;
     case 15:
@@ -442,14 +459,14 @@ void sub_8012780(u8 taskId)
             data->state = 16;
         break;
     case 16:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             data->state = 17;
             break;
         case 1:
         case -1:
-            if ((gUnknown_02022C2D & 0xF0) != 0)
+            if ((sPlayerActivityGroupSize & 0xF0) != 0)
                 data->state = 30;
             else
                 data->state = 19;
@@ -461,16 +478,16 @@ void sub_8012780(u8 taskId)
             data->state = 20;
         break;
     case 20:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             data->state = 23;
             break;
         case 1:
         case -1:
-            if ((gUnknown_02022C2D & 0xF0) != 0)
+            if ((sPlayerActivityGroupSize & 0xF0) != 0)
                 data->state = 15;
-            else if (data->field_13 == (gUnknown_02022C2D & 0xF))
+            else if (data->playerCount == (sPlayerActivityGroupSize & 0xF))
                 data->state = 15;
             else
                 data->state = 4;
@@ -478,13 +495,13 @@ void sub_8012780(u8 taskId)
         }
         break;
     case 17:
-        if (!sub_801320C(data, 7, 29))
+        if (!Leader_SetStateIfMemberListChanged(data, 7, 29))
             data->state = 18;
         break;
     case 18:
-        if (sub_800EF1C())
+        if (LmanAcceptSlotFlagIsNotZero())
         {
-            if (sub_800EF58(FALSE))
+            if (WaitRfuState(FALSE))
             {
                 data->state = 26;
             }
@@ -510,8 +527,8 @@ void sub_8012780(u8 taskId)
     case 21:
     case 23:
         DestroyWirelessStatusIndicatorSprite();
-        sub_800EDD4();
-        sub_8012F64(data);
+        LinkRfu_Shutdown();
+        Leader_DestroyResources(data);
         data->state++;
         break;
     case 24:
@@ -525,7 +542,7 @@ void sub_8012780(u8 taskId)
         gSpecialVar_Result = 8;
         break;
     case 26:
-        if (sub_8011A80())
+        if (RfuIsErrorStatus1or2())
         {
             data->state = 29;
         }
@@ -533,11 +550,11 @@ void sub_8012780(u8 taskId)
         {
             if (gReceivedRemoteLinkPlayers != 0)
             {
-                if (sub_80126CC(gUnknown_02022C2C))
+                if (IsActivityWithVariableGroupSize(gPlayerCurrActivity))
                     sub_801103C();
-                sub_8011068(1);
-                sub_80149C4();
-                sub_8012F64(data);
+                UpdateGameData_GroupLockedIn(TRUE);
+                CreateTask_RunScriptAndFadeToActivity();
+                Leader_DestroyResources(data);
                 DestroyTask(taskId);
             }
         }
@@ -545,212 +562,212 @@ void sub_8012780(u8 taskId)
     }
 }
 
-void sub_8012F64(struct UnkStruct_Leader *data)
+static void Leader_DestroyResources(struct WirelessLink_Leader *data)
 {
-    ClearWindowTilemap(data->field_11);
-    ClearStdWindowAndFrame(data->field_11, FALSE);
+    ClearWindowTilemap(data->nPlayerModeWindowId);
+    ClearStdWindowAndFrame(data->nPlayerModeWindowId, FALSE);
     DestroyListMenuTask(data->listTaskId, 0, 0);
-    ClearWindowTilemap(data->field_10);
+    ClearWindowTilemap(data->bButtonCancelWindowId);
     ClearStdWindowAndFrame(data->listWindowId, FALSE);
     CopyBgTilemapBufferToVram(0);
-    RemoveWindow(data->field_11);
+    RemoveWindow(data->nPlayerModeWindowId);
     RemoveWindow(data->listWindowId);
-    RemoveWindow(data->field_10);
-    DestroyTask(data->field_17);
+    RemoveWindow(data->bButtonCancelWindowId);
+    DestroyTask(data->listenTaskId);
 
     Free(data->field_8);
     Free(data->field_0);
     Free(data->field_4);
 }
 
-void sub_8012FC4(u8 *dst, u8 caseId)
+static void Leader_GetAcceptNewMemberPrompt(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 1:
-    case 2:
-    case 4:
-    case 14:
-    case 28:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_BATTLE_TOWER_OPEN:
+    case ACTIVITY_BATTLE_TOWER:
         StringExpandPlaceholders(dst, sText_PlayerContactedYouForXAccept);
         break;
-    case 21:
-    case 22:
+    case ACTIVITY_WONDER_CARD2:
+    case ACTIVITY_WONDER_NEWS2:
         StringExpandPlaceholders(dst, sText_PlayerContactedYouShareX);
         break;
-    case 3:
-    case 9:
-    case 10:
-    case 11:
-    case 15:
-    case 16:
-    case 23:
-    case 24:
-    case 25:
-    case 26:
-    case 27:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         StringExpandPlaceholders(dst, sText_PlayerContactedYouAddToMembers);
         break;
     }
 }
 
-void sub_8013078(u8 *dst, u8 caseId)
+static void GetYouDeclinedTheOfferMessage(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 65:
-    case 68:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_OfferDeclined1);
         break;
-    case 69:
-    case 72:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
+    case ACTIVITY_CARD | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_OfferDeclined2);
         break;
     }
 }
 
-void sub_80130B4(u8 *dst, u8 caseId)
+static void GetYouAskedToJoinGroupPleaseWaitMessage(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 1:
-    case 2:
-    case 4:
-    case 14:
-    case 21:
-    case 22:
-    case 28:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_BATTLE_TOWER:
+    case ACTIVITY_BATTLE_TOWER_OPEN:
+    case ACTIVITY_WONDER_CARD2:
+    case ACTIVITY_WONDER_NEWS2:
         StringExpandPlaceholders(dst, sText_AwaitingPlayersResponse);
         break;
-    case 3:
-    case 9:
-    case 10:
-    case 11:
-    case 15:
-    case 16:
-    case 23:
-    case 24:
-    case 25:
-    case 26:
-    case 27:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         StringExpandPlaceholders(dst, sText_PlayerHasBeenAskedToRegisterYouPleaseWait);
         break;
     }
 }
 
-void sub_8013160(u8 *dst, u8 caseId)
+static void GetGroupLeaderSentAnOKMessage(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 1:
-    case 2:
-    case 4:
-    case 14:
-    case 21:
-    case 22:
-    case 28:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_BATTLE_TOWER:
+    case ACTIVITY_BATTLE_TOWER_OPEN:
+    case ACTIVITY_WONDER_CARD2:
+    case ACTIVITY_WONDER_NEWS2:
         StringExpandPlaceholders(dst, sText_PlayerSentBackOK);
         break;
-    case 3:
-    case 9:
-    case 10:
-    case 11:
-    case 15:
-    case 16:
-    case 23:
-    case 24:
-    case 25:
-    case 26:
-    case 27:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         StringExpandPlaceholders(dst, sText_PlayerOKdRegistration);
         break;
     }
 }
 
-bool8 sub_801320C(struct UnkStruct_Leader *data, u32 arg1, u32 arg2)
+static bool8 Leader_SetStateIfMemberListChanged(struct WirelessLink_Leader *data, u32 state1, u32 state2)
 {
-    switch (sub_80132D4(data->field_0))
+    switch (LeaderUpdateGroupMembership(data->field_0))
     {
-    case 1:
+    case UNION_ROOM_SPAWN_IN:
         PlaySE(SE_PC_LOGIN);
         RedrawListMenu(data->listTaskId);
-        sub_8018404(gStringVar2, &data->field_0->arr[data->field_13]);
-        sub_8012FC4(gStringVar4, gUnknown_02022C2C);
-        data->state = arg1;
+        IntlConvPartnerUname7(gStringVar2, &data->field_0->arr[data->playerCount]);
+        Leader_GetAcceptNewMemberPrompt(gStringVar4, gPlayerCurrActivity);
+        data->state = state1;
         break;
-    case 2:
-        sub_8011A64(0, 0);
+    case UNION_ROOM_SPAWN_OUT:
+        RfuSetErrorStatus(0, 0);
         RedrawListMenu(data->listTaskId);
-        data->state = arg2;
+        data->state = state2;
         return TRUE;
     }
 
     return FALSE;
 }
 
-void sub_8013278(u8 arg0, s32 id, u8 arg2)
+static void ItemPrintFunc_PossibleGroupMembers(u8 windowId, s32 id, u8 y)
 {
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
     u8 var = 0;
 
-    switch (data->field_0->arr[id].field_1A_0)
+    switch (data->field_0->arr[id].groupScheduledAnim)
     {
-    case 1:
+    case UNION_ROOM_SPAWN_IN:
         if (data->field_0->arr[id].field_1B != 0)
             var = 2;
         break;
-    case 2:
+    case UNION_ROOM_SPAWN_OUT:
         var = 1;
         break;
     }
 
-    sub_80178A0(arg0, 0, arg2, &data->field_0->arr[id], var, id);
+    PrintGroupMemberCandidateOnWindowWithColor(windowId, 0, y, &data->field_0->arr[id], var, id);
 }
 
-u8 sub_80132D4(struct UnkStruct_Main0 *arg0)
+static u8 LeaderUpdateGroupMembership(struct UnkStruct_Main0 *arg0)
 {
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
-    u8 ret = 0;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
+    u8 ret = UNION_ROOM_SPAWN_NONE;
     u8 i;
     s32 id;
 
     for (i = 1; i < 5; i++)
     {
-        u16 var = data->field_0->arr[i].field_1A_0;
-        if (var == 1)
+        u16 var = data->field_0->arr[i].groupScheduledAnim;
+        if (var == UNION_ROOM_SPAWN_IN)
         {
-            id = sub_80176E4(&data->field_0->arr[i], data->field_4->arr);
+            id = Findx20Inx1CArray(&data->field_0->arr[i], data->field_4->arr);
             if (id != 0xFF)
             {
-                data->field_0->arr[i].unk = data->field_4->arr[id].unk0;
-                data->field_0->arr[i].field_18 = var;
+                data->field_0->arr[i].gname_uname = data->field_4->arr[id].gname_uname;
+                data->field_0->arr[i].field_18 = 1;
             }
             else
             {
-                data->field_0->arr[i].field_1A_0 = 2;
-                ret = 2;
+                data->field_0->arr[i].groupScheduledAnim = UNION_ROOM_SPAWN_OUT;
+                ret = UNION_ROOM_SPAWN_OUT;
             }
         }
     }
 
-    for (id = 0; id < 4; id++)
-        sub_8017734(data->field_0->arr, &data->field_4->arr[id], 5);
+    for (id = 0; id < RFU_CHILD_MAX; id++)
+        Appendx1Ctox20(data->field_0->arr, &data->field_4->arr[id], 5);
 
-    if (ret != 2)
+    if (ret != UNION_ROOM_SPAWN_OUT)
     {
         for (id = 0; id < 5; id++)
         {
             if (data->field_0->arr[id].field_1B != 0)
-                ret = 1;
+                ret = UNION_ROOM_SPAWN_IN;
         }
     }
 
     return ret;
 }
 
-u8 sub_8013398(struct UnkStruct_Main0 *arg0)
+static u8 sub_8013398(struct UnkStruct_Main0 *arg0)
 {
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
     u8 copiedCount;
     s32 i;
     u8 ret;
@@ -761,7 +778,7 @@ u8 sub_8013398(struct UnkStruct_Main0 *arg0)
     copiedCount = 0;
     for (i = 0; i < 5; i++)
     {
-        if (data->field_8->arr[i].field_1A_0 == 1)
+        if (data->field_8->arr[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
         {
             data->field_0->arr[copiedCount] = data->field_8->arr[i];
             copiedCount++;
@@ -771,16 +788,16 @@ u8 sub_8013398(struct UnkStruct_Main0 *arg0)
     ret = copiedCount;
     for (; copiedCount < 5; copiedCount++)
     {
-        data->field_0->arr[copiedCount].unk = gUnknown_082F045C;
+        data->field_0->arr[copiedCount].gname_uname = sWirelessGnameUnamePair_Dummy;
         data->field_0->arr[copiedCount].field_18 = 0;
-        data->field_0->arr[copiedCount].field_1A_0 = 0;
+        data->field_0->arr[copiedCount].groupScheduledAnim = UNION_ROOM_SPAWN_NONE;
         data->field_0->arr[copiedCount].field_1A_1 = 0;
         data->field_0->arr[copiedCount].field_1B = 0;
     }
 
     for (i = 0; i < 5; i++)
     {
-        if (data->field_0->arr[i].field_1A_0 != 1)
+        if (data->field_0->arr[i].groupScheduledAnim != UNION_ROOM_SPAWN_IN)
             continue;
         if (data->field_0->arr[i].field_1B != 0x40)
             continue;
@@ -795,34 +812,34 @@ u8 sub_8013398(struct UnkStruct_Main0 *arg0)
 void TryJoinLinkGroup(void)
 {
     u8 taskId;
-    struct UnkStruct_Group *dataPtr;
+    struct WirelessLink_Group *data;
 
-    taskId = CreateTask(sub_80134E8, 0);
-    gUnknown_02022C30.group = dataPtr = (void*)(gTasks[taskId].data);
-    gUnknown_03000DA4 = dataPtr;
+    taskId = CreateTask(Task_TryJoinLinkGroup, 0);
+    sWirelessLinkMain.group = data = (void*)(gTasks[taskId].data);
+    sGroup = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
+    data->state = 0;
+    data->textState = 0;
     gSpecialVar_Result = 0;
 }
 
-void sub_80134E8(u8 taskId)
+static void Task_TryJoinLinkGroup(u8 taskId)
 {
     s32 id;
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
 
     switch (data->state)
     {
     case 0:
         if (gSpecialVar_0x8004 == LINK_GROUP_BATTLE_TOWER && gSaveBlock2Ptr->frontier.lvlMode == FRONTIER_LVL_OPEN)
             gSpecialVar_0x8004++;
-        gUnknown_02022C2C = gUnknown_082F0530[gSpecialVar_0x8004];
-        sub_8010F84(gUnknown_02022C2C, 0, 0);
-        sub_800B488();
+        gPlayerCurrActivity = sLinkGroupToURoomActivity[gSpecialVar_0x8004];
+        SetHostRFUtgtGname(gPlayerCurrActivity, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C5C();
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x200);
+        InitializeRfuLinkManager_JoinGroup();
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(16 * sizeof(struct UnkStruct_x20));
         data->state = 1;
         break;
     case 1:
@@ -830,34 +847,34 @@ void sub_80134E8(u8 taskId)
             data->state = 2;
         break;
     case 2:
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 16);
-        data->field_11 = sub_8016FC0(data->field_4, gSpecialVar_0x8004);
-        data->field_C = AddWindow(&gUnknown_082F00BC);
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 16);
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, gSpecialVar_0x8004);
+        data->bButtonCancelWindowId = AddWindow(&sWindowTemplate_BButtonCancel);
         data->listWindowId = AddWindow(&gUnknown_082F0174);
-        data->field_D = AddWindow(&gUnknown_082F017C);
+        data->playerNameAndIdWindowId = AddWindow(&gUnknown_082F017C);
 
-        FillWindowPixelBuffer(data->field_C, PIXEL_FILL(2));
-        sub_80173E0(data->field_C, 0, sText_ChooseJoinCancel, 8, 1, 4);
-        PutWindowTilemap(data->field_C);
-        CopyWindowToVram(data->field_C, 2);
+        FillWindowPixelBuffer(data->bButtonCancelWindowId, PIXEL_FILL(2));
+        UR_AddTextPrinterParameterized(data->bButtonCancelWindowId, 0, sText_ChooseJoinCancel, 8, 1, 4);
+        PutWindowTilemap(data->bButtonCancelWindowId);
+        CopyWindowToVram(data->bButtonCancelWindowId, 2);
 
         DrawStdWindowFrame(data->listWindowId, FALSE);
-        gMultiuseListMenuTemplate = gUnknown_082F0204;
+        gMultiuseListMenuTemplate = sListMenuTemplate_UnionRoomGroups;
         gMultiuseListMenuTemplate.windowId = data->listWindowId;
         data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
-        DrawStdWindowFrame(data->field_D, FALSE);
-        PutWindowTilemap(data->field_D);
-        sub_80125BC(data->field_D);
-        CopyWindowToVram(data->field_D, 2);
+        DrawStdWindowFrame(data->playerNameAndIdWindowId, FALSE);
+        PutWindowTilemap(data->playerNameAndIdWindowId);
+        PrintPlayerNameAndIdOnWindow(data->playerNameAndIdWindowId);
+        CopyWindowToVram(data->playerNameAndIdWindowId, 2);
 
         CopyBgTilemapBufferToVram(0);
-        data->field_F = 0;
+        data->leaderId = 0;
         data->state = 3;
         break;
     case 3:
-        id = sub_8013E44();
+        id = GetNewLeaderCandidate();
         switch (id)
         {
         case 1:
@@ -870,14 +887,14 @@ void sub_80134E8(u8 taskId)
             {
                 // this unused variable along with the assignment is needed to match
                 u32 unusedVar;
-                unusedVar  = data->field_0->arr[id].unk.field_0.activity;
+                unusedVar  = data->field_0->arr[id].gname_uname.gname.activity;
 
-                if (data->field_0->arr[id].field_1A_0 == 1 && !data->field_0->arr[id].unk.field_0.started)
+                if (data->field_0->arr[id].groupScheduledAnim == UNION_ROOM_SPAWN_IN && !data->field_0->arr[id].gname_uname.gname.started)
                 {
-                    u32 var = sub_8013B8C(data, id);
+                    u32 var = IsTryingToTradeAcrossVersionTooSoon(data, id);
                     if (var == 0)
                     {
-                        sub_8013BD8(data, id);
+                        AskToJoinRfuGroup(data, id);
                         data->state = 5;
                         PlaySE(SE_PN_ON);
                     }
@@ -904,30 +921,46 @@ void sub_80134E8(u8 taskId)
         }
         break;
     case 5:
-        sub_80130B4(gStringVar4, gUnknown_02022C2C);
+        GetYouAskedToJoinGroupPleaseWaitMessage(gStringVar4, gPlayerCurrActivity);
         if (PrintOnTextbox(&data->textState, gStringVar4))
         {
-            sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
+            IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
             data->state = 6;
         }
         break;
     case 6:
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
         {
-            gUnknown_02022C2C = data->field_0->arr[data->field_F].unk.field_0.activity;
-            sub_8011A64(0, 0);
-            switch (gUnknown_02022C2C)
+            gPlayerCurrActivity = data->field_0->arr[data->leaderId].gname_uname.gname.activity;
+            RfuSetErrorStatus(0, 0);
+            switch (gPlayerCurrActivity)
             {
-            case 1 ... 5:
-            case 9 ... 11:
-            case 13 ... 16:
-            case 21 ... 28:
+            case ACTIVITY_BATTLE_SINGLE:
+            case ACTIVITY_BATTLE_DOUBLE:
+            case ACTIVITY_BATTLE_MULTI:
+            case ACTIVITY_TRADE:
+            case ACTIVITY_CHAT:
+            case ACTIVITY_POKEMON_JUMP:
+            case ACTIVITY_BERRY_CRUSH:
+            case ACTIVITY_BERRY_PICK:
+            case ACTIVITY_SPIN_TRADE:
+            case ACTIVITY_BATTLE_TOWER:
+            case ACTIVITY_BATTLE_TOWER_OPEN:
+            case ACTIVITY_RECORD_CORNER:
+            case ACTIVITY_BERRY_BLENDER:
+            case ACTIVITY_WONDER_CARD2:
+            case ACTIVITY_WONDER_NEWS2:
+            case ACTIVITY_CONTEST_COOL:
+            case ACTIVITY_CONTEST_BEAUTY:
+            case ACTIVITY_CONTEST_CUTE:
+            case ACTIVITY_CONTEST_SMART:
+            case ACTIVITY_CONTEST_TOUGH:
                 data->state = 20;
                 return;
             }
         }
 
-        switch (sub_8011A74())
+        switch (RfuGetErrorStatus())
         {
         case 1:
             data->state = 12;
@@ -938,49 +971,49 @@ void sub_80134E8(u8 taskId)
             data->state = 14;
             break;
         case 5:
-            sub_8013160(gStringVar4, gUnknown_02022C2C);
+            GetGroupLeaderSentAnOKMessage(gStringVar4, gPlayerCurrActivity);
             if (PrintOnTextbox(&data->textState, gStringVar4))
             {
-                if (gUnknown_02022C2C == 28 || gUnknown_02022C2C == 14)
+                if (gPlayerCurrActivity == ACTIVITY_BATTLE_TOWER || gPlayerCurrActivity == ACTIVITY_BATTLE_TOWER_OPEN)
                 {
-                    sub_8011A64(12, 0);
+                    RfuSetErrorStatus(12, 0);
                 }
                 else
                 {
-                    sub_8011A64(7, 0);
-                    StringCopy(gStringVar1, sLinkGroupActivityTexts[gUnknown_02022C2C]);
+                    RfuSetErrorStatus(7, 0);
+                    StringCopy(gStringVar1, sLinkGroupActivityTexts[gPlayerCurrActivity]);
                     StringExpandPlaceholders(gStringVar4, sText_AwaitingOtherMembers);
                 }
             }
             break;
         case 7:
-            if (data->field_15 > 0xF0)
+            if (data->delayBeforePrint > 240)
             {
                 if (PrintOnTextbox(&data->textState, gStringVar4))
                 {
-                    sub_8011A64(12, 0);
-                    data->field_15 = 0;
+                    RfuSetErrorStatus(12, 0);
+                    data->delayBeforePrint = 0;
                 }
             }
             else
             {
-                switch (gUnknown_02022C2C)
+                switch (gPlayerCurrActivity)
                 {
-                case 1:
-                case 2:
-                case 4:
-                case 14:
-                case 28:
+                case ACTIVITY_BATTLE_SINGLE:
+                case ACTIVITY_BATTLE_DOUBLE:
+                case ACTIVITY_TRADE:
+                case ACTIVITY_BATTLE_TOWER:
+                case ACTIVITY_BATTLE_TOWER_OPEN:
                     break;
                 default:
-                    data->field_15++;
+                    data->delayBeforePrint++;
                     break;
                 }
             }
             break;
         }
 
-        if (!sub_8011A74() && gMain.newKeys & B_BUTTON)
+        if (!RfuGetErrorStatus() && gMain.newKeys & B_BUTTON)
             data->state = 7;
         break;
     case 7:
@@ -988,10 +1021,10 @@ void sub_80134E8(u8 taskId)
             data->state = 8;
         break;
     case 8:
-        switch (sub_80170B8(&data->textState, sub_8011A74()))
+        switch (UnionRoomHandleYesNo(&data->textState, RfuGetErrorStatus()))
         {
         case 0:
-            sub_80106D4();
+            LinkRfuNIsend8();
             data->state = 9;
             RedrawListMenu(data->listTaskId);
             break;
@@ -1007,7 +1040,7 @@ void sub_80134E8(u8 taskId)
         }
         break;
     case 9:
-        if (sub_8011A74())
+        if (RfuGetErrorStatus())
             data->state = 6;
         break;
     case 10:
@@ -1015,23 +1048,23 @@ void sub_80134E8(u8 taskId)
     case 14:
     case 18:
     case 20:
-        ClearWindowTilemap(data->field_D);
-        ClearStdWindowAndFrame(data->field_D, FALSE);
+        ClearWindowTilemap(data->playerNameAndIdWindowId);
+        ClearStdWindowAndFrame(data->playerNameAndIdWindowId, FALSE);
         DestroyListMenuTask(data->listTaskId, 0, 0);
-        ClearWindowTilemap(data->field_C);
+        ClearWindowTilemap(data->bButtonCancelWindowId);
         ClearStdWindowAndFrame(data->listWindowId, FALSE);
         CopyBgTilemapBufferToVram(0);
-        RemoveWindow(data->field_D);
+        RemoveWindow(data->playerNameAndIdWindowId);
         RemoveWindow(data->listWindowId);
-        RemoveWindow(data->field_C);
-        DestroyTask(data->field_11);
+        RemoveWindow(data->bButtonCancelWindowId);
+        DestroyTask(data->listenTaskId);
         Free(data->field_0);
         Free(data->field_4);
         data->state++;
         break;
     case 13:
         DestroyWirelessStatusIndicatorSprite();
-        if (PrintOnTextbox(&data->textState, sPlayerDisconnectedTexts[sub_8011A74()]))
+        if (PrintOnTextbox(&data->textState, sPlayerDisconnectedTexts[RfuGetErrorStatus()]))
         {
             gSpecialVar_Result = 6;
             data->state = 23;
@@ -1044,7 +1077,7 @@ void sub_80134E8(u8 taskId)
         break;
     case 15:
         DestroyWirelessStatusIndicatorSprite();
-        if (PrintOnTextbox(&data->textState, sPlayerDisconnectedTexts[sub_8011A74()]))
+        if (PrintOnTextbox(&data->textState, sPlayerDisconnectedTexts[RfuGetErrorStatus()]))
         {
             gSpecialVar_Result = 8;
             data->state = 23;
@@ -1059,25 +1092,25 @@ void sub_80134E8(u8 taskId)
         break;
     case 23:
         DestroyTask(taskId);
-        sub_80173D4();
-        sub_800EDD4();
+        JoinGroup_EnableScriptContexts();
+        LinkRfu_Shutdown();
         break;
     case 21:
-        sub_80149C4();
+        CreateTask_RunScriptAndFadeToActivity();
         DestroyTask(taskId);
         break;
     }
 }
 
-u32 sub_8013B8C(struct UnkStruct_Group *arg0, s32 id)
+static u32 IsTryingToTradeAcrossVersionTooSoon(struct WirelessLink_Group *data, s32 id)
 {
-    struct UnkStruct_x20 *structPtr = &arg0->field_0->arr[id];
+    struct UnkStruct_x20 *structPtr = &data->field_0->arr[id];
 
-    if (gUnknown_02022C2C == 4 && structPtr->unk.field_0.unk_00.version != VERSION_EMERALD)
+    if (gPlayerCurrActivity == ACTIVITY_TRADE && structPtr->gname_uname.gname.unk_00.version != VERSION_EMERALD)
     {
         if (!(gSaveBlock2Ptr->specialSaveWarpFlags & CHAMPION_SAVEWARP))
             return 1;
-        else if (structPtr->unk.field_0.unk_00.isChampion)
+        else if (structPtr->gname_uname.gname.unk_00.isChampion)
             return 0;
     }
     else
@@ -1088,88 +1121,88 @@ u32 sub_8013B8C(struct UnkStruct_Group *arg0, s32 id)
     return 2;
 }
 
-void sub_8013BD8(struct UnkStruct_Group *data, s32 id)
+static void AskToJoinRfuGroup(struct WirelessLink_Group *data, s32 id)
 {
-    data->field_F = id;
+    data->leaderId = id;
     LoadWirelessStatusIndicatorSpriteGfx();
     CreateWirelessStatusIndicatorSprite(0, 0);
     RedrawListMenu(data->listTaskId);
-    sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
-    sub_8011090(gUnknown_082F0530[gSpecialVar_0x8004], 0, 1);
-    sub_8011FC8(data->field_0->arr[data->field_F].unk.playerName, ReadAsU16(data->field_0->arr[data->field_F].unk.field_0.unk_00.playerTrainerId));
+    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
+    UpdateGameDataWithActivitySpriteGendersFlag(sLinkGroupToURoomActivity[gSpecialVar_0x8004], 0, 1);
+    CreateTask_RfuReconnectWithParent(data->field_0->arr[data->leaderId].gname_uname.playerName, ReadAsU16(data->field_0->arr[data->leaderId].gname_uname.gname.unk_00.playerTrainerId));
 }
 
-u8 sub_8013C40(void)
+u8 CreateTask_ListenToWireless(void)
 {
     u8 taskId;
-    struct UnkStruct_Group *dataPtr;
+    struct WirelessLink_Group *data;
 
-    taskId = CreateTask(sub_8013C7C, 0);
-    gUnknown_02022C30.group = dataPtr = (void*)(gTasks[taskId].data);
+    taskId = CreateTask(Task_ListenToWireless, 0);
+    sWirelessLinkMain.group = data = (void*)(gTasks[taskId].data);
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
+    data->state = 0;
+    data->textState = 0;
 
-    gUnknown_03000DA4 = dataPtr;
+    sGroup = data;
 
     return taskId;
 }
 
-void sub_8013C7C(u8 taskId)
+static void Task_ListenToWireless(u8 taskId)
 {
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
 
     switch (data->state)
     {
     case 0:
-        sub_8010F84(0, 0, 0);
-        sub_800B488();
+        SetHostRFUtgtGname(0, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C5C();
+        InitializeRfuLinkManager_JoinGroup();
         sub_80111B0(TRUE);
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x200);
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(16 * sizeof(struct UnkStruct_x20));
         data->state = 2;
         break;
     case 2:
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 16);
-        data->field_11 = sub_8016FC0(data->field_4, 0xFF);
-        data->field_F = 0;
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 16);
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, 0xFF);
+        data->leaderId = 0;
         data->state = 3;
         break;
     case 3:
-        if (sub_8013E44() == 1)
+        if (GetNewLeaderCandidate() == 1)
             PlaySE(SE_PC_LOGIN);
         if (gTasks[taskId].data[15] == 0xFF)
             data->state = 10;
         break;
     case 10:
-        DestroyTask(data->field_11);
+        DestroyTask(data->listenTaskId);
         Free(data->field_0);
         Free(data->field_4);
-        sub_800EDD4();
+        LinkRfu_Shutdown();
         data->state++;
         break;
     case 11:
-        sub_800EDD4();
+        LinkRfu_Shutdown();
         DestroyTask(taskId);
         break;
     }
 }
 
-bool32 sub_8013D88(u32 arg0, u32 id)
+static bool32 IsPartnerActivityAcceptable(u32 activity, u32 group)
 {
-    if (id == 0xFF)
+    if (group == 0xFF)
         return TRUE;
 
-    if (id <= ARRAY_COUNT(gUnknown_082F04D8)) // UB: <= may access data outside the array
+    if (group <= ARRAY_COUNT(sAcceptedActivityIds)) // UB: <= may access data outside the array
     {
-        const u8 *bytes = gUnknown_082F04D8[id];
+        const u8 *bytes = sAcceptedActivityIds[group];
 
         while ((*(bytes) != 0xFF))
         {
-            if ((*bytes) == arg0)
+            if ((*bytes) == activity)
                 return TRUE;
             bytes++;
         }
@@ -1178,49 +1211,49 @@ bool32 sub_8013D88(u32 arg0, u32 id)
     return FALSE;
 }
 
-u8 sub_8013DBC(struct UnkStruct_Group *data, u32 id)
+static u8 URoomGroupListGetTextColor(struct WirelessLink_Group *data, u32 id)
 {
-    if (data->field_0->arr[id].field_1A_0 == 1)
+    if (data->field_0->arr[id].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
     {
-        if (data->field_0->arr[id].unk.field_0.started)
-            return 3;
+        if (data->field_0->arr[id].gname_uname.gname.started)
+            return UR_COLOR_WHT_WHT_LTE;
         else if (data->field_0->arr[id].field_1A_1 != 0)
-            return 1;
+            return UR_COLOR_RED_WHT_LTR;
         else if (data->field_0->arr[id].field_1B != 0)
-            return 2;
+            return UR_COLOR_GRN_WHT_LTG;
     }
 
-    return 0;
+    return UR_COLOR_DKE_WHT_LTE;
 }
 
-void sub_8013DF4(u8 arg0, s32 id, u8 arg2)
+static void ListMenuItemPrintFunc_UnionRoomGroups(u8 windowId, s32 id, u8 y)
 {
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
-    u8 var = sub_8013DBC(data, id);
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
+    u8 colorId = URoomGroupListGetTextColor(data, id);
 
-    sub_80177B8(arg0, 8, arg2, &data->field_0->arr[id], var, id);
+    PrintUnionRoomGroupOnWindow(windowId, 8, y, &data->field_0->arr[id], colorId, id);
 }
 
-u8 sub_8013E44(void)
+static u8 GetNewLeaderCandidate(void)
 {
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
     u8 ret = 0;
     u8 i;
     s32 id;
 
     for (i = 0; i < 16; i++)
     {
-        if (data->field_0->arr[i].field_1A_0 != 0)
+        if (data->field_0->arr[i].groupScheduledAnim != UNION_ROOM_SPAWN_NONE)
         {
-            id = sub_80176E4(&data->field_0->arr[i], data->field_4->arr);
+            id = Findx20Inx1CArray(&data->field_0->arr[i], data->field_4->arr);
             if (id != 0xFF)
             {
-                if (data->field_0->arr[i].field_1A_0 == 1)
+                if (data->field_0->arr[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
                 {
-                    if (sub_8017678(&data->field_0->arr[i].unk, &data->field_4->arr[id].unk0))
+                    if (AreUnionRoomPlayerGnamesDifferent(&data->field_0->arr[i].gname_uname, &data->field_4->arr[id].gname_uname))
                     {
-                        data->field_0->arr[i].unk = data->field_4->arr[id].unk0;
-                        data->field_0->arr[i].field_1B = 0x40;
+                        data->field_0->arr[i].gname_uname = data->field_4->arr[id].gname_uname;
+                        data->field_0->arr[i].field_1B = 64;
                         ret = 1;
                     }
                     else
@@ -1235,8 +1268,8 @@ u8 sub_8013E44(void)
                 }
                 else
                 {
-                    data->field_0->arr[i].field_1A_0 = 1;
-                    data->field_0->arr[i].field_1B = 0x40;
+                    data->field_0->arr[i].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
+                    data->field_0->arr[i].field_1B = 64;
                     ret = 1;
                 }
 
@@ -1244,12 +1277,12 @@ u8 sub_8013E44(void)
             }
             else
             {
-                if (data->field_0->arr[i].field_1A_0 != 2)
+                if (data->field_0->arr[i].groupScheduledAnim != UNION_ROOM_SPAWN_OUT)
                 {
                     data->field_0->arr[i].field_18++;
                     if (data->field_0->arr[i].field_18 >= 300)
                     {
-                        data->field_0->arr[i].field_1A_0 = 2;
+                        data->field_0->arr[i].groupScheduledAnim = UNION_ROOM_SPAWN_OUT;
                         ret = 2;
                     }
                 }
@@ -1257,29 +1290,29 @@ u8 sub_8013E44(void)
         }
     }
 
-    for (id = 0; id < 4; id++)
+    for (id = 0; id < RFU_CHILD_MAX; id++)
     {
-        if (sub_8017734(data->field_0->arr, &data->field_4->arr[id], 16) != 0xFF)
+        if (Appendx1Ctox20(data->field_0->arr, &data->field_4->arr[id], 16) != 0xFF)
             ret = 1;
     }
 
     return ret;
 }
 
-static void Task_CreateTradeMenu(u8 taskId)
+static void Task_ReturnFromLinkTrade(u8 taskId)
 {
     CB2_StartCreateTradeMenu();
     DestroyTask(taskId);
 }
 
-u8 sub_8013F78(void)
+u8 CreateTask_ReturnFromLinkTrade(void)
 {
-    u8 taskId = CreateTask(Task_CreateTradeMenu, 0);
+    u8 taskId = CreateTask(Task_ReturnFromLinkTrade, 0);
 
     return taskId;
 }
 
-void sub_8013F90(u8 taskId)
+static void Task_StartUnionRoomTrade(u8 taskId)
 {
     u32 monId = GetPartyPositionOfRegisteredMon(&sUnionRoomTrade, GetMultiplayerId());
 
@@ -1319,7 +1352,7 @@ void sub_8013F90(u8 taskId)
     }
 }
 
-void sub_80140E0(u8 taskId)
+static void Task_ExchangeCards(u8 taskId)
 {
     switch (gTasks[taskId].data[0])
     {
@@ -1343,11 +1376,11 @@ void sub_80140E0(u8 taskId)
             if (GetLinkPlayerCount() == 2)
             {
                 recvBuff = gBlockRecvBuffer[GetMultiplayerId() ^ 1];
-                sub_801B94C(recvBuff[48]);
+                MEventHandleReceivedWonderCard(recvBuff[48]);
             }
             else
             {
-                sub_801B940();
+                ResetReceivedWonderCardFlag();
             }
 
             ResetBlockReceivedFlags();
@@ -1357,16 +1390,16 @@ void sub_80140E0(u8 taskId)
     }
 }
 
-void sub_80141A4(void)
+static void CB2_ShowCard(void)
 {
     switch (gMain.state)
     {
     case 0:
-        CreateTask(sub_80140E0, 5);
+        CreateTask(Task_ExchangeCards, 5);
         gMain.state++;
         break;
     case 1:
-        if (!FuncIsActiveTask(sub_80140E0))
+        if (!FuncIsActiveTask(Task_ExchangeCards))
             ShowTrainerCardInLink(GetMultiplayerId() ^ 1, CB2_ReturnToField);
         break;
     }
@@ -1377,7 +1410,7 @@ void sub_80141A4(void)
     BuildOamBuffer();
 }
 
-void sub_8014210(u16 battleFlags)
+void StartUnionRoomBattle(u16 battleFlags)
 {
     HealPlayerParty();
     SavePlayerParty();
@@ -1385,11 +1418,12 @@ void sub_8014210(u16 battleFlags)
     gLinkPlayers[0].linkType = LINKTYPE_BATTLE;
     gLinkPlayers[GetMultiplayerId()].id = GetMultiplayerId();
     gLinkPlayers[GetMultiplayerId() ^ 1].id = GetMultiplayerId() ^ 1;
-    gMain.savedCallback = sub_80B360C;
+    gMain.savedCallback = CB2_ReturnFromCableClubBattle;
     gBattleTypeFlags = battleFlags;
     PlayBattleBGM();
 }
 
+// TODO: pokefirered bad name
 static void sub_8014290(u16 linkService, u16 x, u16 y)
 {
     VarSet(VAR_CABLE_CLUB_STATE, linkService);
@@ -1398,7 +1432,8 @@ static void sub_8014290(u16 linkService, u16 x, u16 y)
     WarpIntoMap();
 }
 
-void sub_8014304(s8 mapGroup, s8 mapNum, s32 x, s32 y, u16 linkService)
+// TODO: pokefirered bad name
+static void sub_8014304(s8 mapGroup, s8 mapNum, s32 x, s32 y, u16 linkService)
 {
     gSpecialVar_0x8004 = linkService;
     VarSet(VAR_CABLE_CLUB_STATE, linkService);
@@ -1409,16 +1444,16 @@ void sub_8014304(s8 mapGroup, s8 mapNum, s32 x, s32 y, u16 linkService)
     WarpIntoMap();
 }
 
-void sub_8014384(void)
+static void CB2_TransitionToCableClub(void)
 {
     switch (gMain.state)
     {
     case 0:
-        CreateTask(sub_80140E0, 5);
+        CreateTask(Task_ExchangeCards, 5);
         gMain.state++;
         break;
     case 1:
-        if (!FuncIsActiveTask(sub_80140E0))
+        if (!FuncIsActiveTask(Task_ExchangeCards))
             SetMainCallback2(CB2_ReturnToFieldCableClub);
         break;
     }
@@ -1429,120 +1464,125 @@ void sub_8014384(void)
     BuildOamBuffer();
 }
 
-void sub_80143E4(void *arg0, bool32 arg1)
+static void CreateTrainerCardInBuffer(void *dest, bool32 setWonderCard)
 {
-    u16 *argAsU16Ptr = arg0;
+    u16 *argAsU16Ptr = dest;
 
     TrainerCard_GenerateCardForPlayer((struct TrainerCard *)argAsU16Ptr);
-    if (arg1)
+    if (setWonderCard)
         argAsU16Ptr[48] = GetWonderCardFlagID();
     else
         argAsU16Ptr[48] = 0;
 }
 
-void sub_801440C(u8 taskId)
+static void Task_StartActivity(u8 taskId)
 {
-    sub_801B940();
-    switch (gUnknown_02022C2C)
+    ResetReceivedWonderCardFlag();
+    switch (gPlayerCurrActivity)
     {
-    case 1 ... 4:
-    case 9 ... 11:
-    case 13:
-    case 15:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_SPIN_TRADE:
+    case ACTIVITY_RECORD_CORNER:
         RecordMixTrainerNames();
         break;
     }
 
-    switch (gUnknown_02022C2C)
+    switch (gPlayerCurrActivity)
     {
-    case 65:
-    case 81:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
+    case ACTIVITY_ACCEPT | IN_UNION_ROOM:
         CleanupOverworldWindowsAndTilemaps();
-        gMain.savedCallback = sub_801AC54;
+        gMain.savedCallback = CB2_UnionRoomBattle;
         InitChooseHalfPartyForBattle(3);
         break;
-    case 1:
+    case ACTIVITY_BATTLE_SINGLE:
         CleanupOverworldWindowsAndTilemaps();
-        sub_80143E4(gBlockSendBuffer, TRUE);
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         HealPlayerParty();
         SavePlayerParty();
         LoadPlayerBag();
         sub_8014304(MAP_GROUP(BATTLE_COLOSSEUM_2P), MAP_NUM(BATTLE_COLOSSEUM_2P), 6, 8, USING_SINGLE_BATTLE);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 2:
+    case ACTIVITY_BATTLE_DOUBLE:
         CleanupOverworldWindowsAndTilemaps();
         HealPlayerParty();
         SavePlayerParty();
         LoadPlayerBag();
-        sub_80143E4(gBlockSendBuffer, TRUE);
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         sub_8014304(MAP_GROUP(BATTLE_COLOSSEUM_2P), MAP_NUM(BATTLE_COLOSSEUM_2P), 6, 8, USING_DOUBLE_BATTLE);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 3:
+    case ACTIVITY_BATTLE_MULTI:
         CleanupOverworldWindowsAndTilemaps();
         HealPlayerParty();
         SavePlayerParty();
         LoadPlayerBag();
-        sub_80143E4(gBlockSendBuffer, TRUE);
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         sub_8014304(MAP_GROUP(BATTLE_COLOSSEUM_4P), MAP_NUM(BATTLE_COLOSSEUM_4P), 5, 8, USING_MULTI_BATTLE);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 4:
-        sub_80143E4(gBlockSendBuffer, TRUE);
+    case ACTIVITY_TRADE:
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         CleanupOverworldWindowsAndTilemaps();
         sub_8014304(MAP_GROUP(TRADE_CENTER), MAP_NUM(TRADE_CENTER), 5, 8, USING_TRADE_CENTER);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 15:
-        sub_80143E4(gBlockSendBuffer, TRUE);
+    case ACTIVITY_RECORD_CORNER:
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         CleanupOverworldWindowsAndTilemaps();
         sub_8014304(MAP_GROUP(RECORD_CORNER), MAP_NUM(RECORD_CORNER), 8, 9, USING_RECORD_CORNER);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 68:
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
         CleanupOverworldWindowsAndTilemaps();
-        CreateTask(sub_8013F90, 0);
+        CreateTask(Task_StartUnionRoomTrade, 0);
         break;
-    case 5:
-    case 69:
+    case ACTIVITY_CHAT:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
         if (GetMultiplayerId() == 0)
         {
-            sub_800ED10();
+            LinkRfu_CreateConnectionAsParent();
         }
         else
         {
-            sub_800ED28();
-            sub_8010F84(69, 0, 1);
+            LinkRfu_StopManagerBeforeEnteringChat();
+            SetHostRFUtgtGname(69, 0, 1);
         }
-        sub_801DD98();
+        EnterUnionRoomChat();
         break;
-    case 8:
-    case 72:
-        sub_80143E4(gBlockSendBuffer, FALSE);
-        SetMainCallback2(sub_80141A4);
+    case ACTIVITY_CARD:
+    case ACTIVITY_CARD | IN_UNION_ROOM:
+        CreateTrainerCardInBuffer(gBlockSendBuffer, FALSE);
+        SetMainCallback2(CB2_ShowCard);
         break;
-    case 9:
+    case ACTIVITY_POKEMON_JUMP:
         sub_8014290(USING_MINIGAME, 5, 1);
-        sub_802A9A8(GetCursorSelectionMonId(), CB2_LoadMap);
+        StartPokemonJump(GetCursorSelectionMonId(), CB2_LoadMap);
         break;
-    case 10:
+    case ACTIVITY_BERRY_CRUSH:
         sub_8014290(USING_BERRY_CRUSH, 9, 1);
-        sub_8020C70(CB2_LoadMap);
+        StartBerryCrush(CB2_LoadMap);
         break;
-    case 11:
+    case ACTIVITY_BERRY_PICK:
         sub_8014290(USING_MINIGAME, 5, 1);
-        sub_802493C(GetCursorSelectionMonId(), CB2_LoadMap);
+        StartDodrioBerryPicking(GetCursorSelectionMonId(), CB2_LoadMap);
         break;
     }
 
     DestroyTask(taskId);
     gSpecialVar_Result = 1;
-    if (gUnknown_02022C2C != 68)
+    if (gPlayerCurrActivity != (ACTIVITY_TRADE | IN_UNION_ROOM))
         ScriptContext2_Disable();
 }
 
-void sub_8014790(u8 taskId)
+static void Task_RunScriptAndFadeToActivity(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
     u16 *sendBuff = (u16*)(gBlockSendBuffer);
@@ -1551,10 +1591,10 @@ void sub_8014790(u8 taskId)
     {
     case 0:
         gSpecialVar_Result = 1;
-        switch (gUnknown_02022C2C)
+        switch (gPlayerCurrActivity)
         {
-        case 14:
-        case 28:
+        case ACTIVITY_BATTLE_TOWER:
+        case ACTIVITY_BATTLE_TOWER_OPEN:
             gLinkPlayers[0].linkType = LINKTYPE_BATTLE;
             gLinkPlayers[0].id = 0;
             gLinkPlayers[1].id = 2;
@@ -1565,8 +1605,12 @@ void sub_8014790(u8 taskId)
             RecordMixTrainerNames();
             ResetBlockReceivedFlags();
             break;
-        case 16:
-        case 23 ... 27:
+        case ACTIVITY_BERRY_BLENDER:
+        case ACTIVITY_CONTEST_COOL:
+        case ACTIVITY_CONTEST_BEAUTY:
+        case ACTIVITY_CONTEST_CUTE:
+        case ACTIVITY_CONTEST_SMART:
+        case ACTIVITY_CONTEST_TOUGH:
             RecordMixTrainerNames();
             DestroyTask(taskId);
         default:
@@ -1585,7 +1629,7 @@ void sub_8014790(u8 taskId)
     case 2:
         if (!gPaletteFade.active)
         {
-            if (gUnknown_02022C2C == 29)
+            if (gPlayerCurrActivity == 29)
             {
                 DestroyTask(taskId);
                 SetMainCallback2(CB2_StartCreateTradeMenu);
@@ -1601,7 +1645,7 @@ void sub_8014790(u8 taskId)
         if (IsLinkTaskFinished())
         {
             DestroyTask(taskId);
-            sub_80149D8();
+            CreateTask_StartActivity();
         }
         break;
     case 4:
@@ -1642,78 +1686,78 @@ void sub_8014790(u8 taskId)
     }
 }
 
-void sub_80149C4(void)
+static void CreateTask_RunScriptAndFadeToActivity(void)
 {
-    CreateTask(sub_8014790, 0);
+    CreateTask(Task_RunScriptAndFadeToActivity, 0);
 }
 
-void sub_80149D8(void)
+static void CreateTask_StartActivity(void)
 {
-    u8 taskId = CreateTask(sub_801440C, 0);
+    u8 taskId = CreateTask(Task_StartActivity, 0);
     gTasks[taskId].data[0] = 0;
 }
 
-void MEvent_CreateTask_Leader(u32 arg0)
+void MEvent_CreateTask_Leader(u32 activity)
 {
     u8 taskId;
-    struct UnkStruct_Leader *dataPtr;
+    struct WirelessLink_Leader *data;
 
-    taskId = CreateTask(sub_8014A40, 0);
-    gUnknown_02022C30.leader = dataPtr = (void*)(gTasks[taskId].data);
+    taskId = CreateTask(Task_MEvent_Leader, 0);
+    sWirelessLinkMain.leader = data = (void*)(gTasks[taskId].data);
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
-    dataPtr->field_18 = arg0;
+    data->state = 0;
+    data->textState = 0;
+    data->activity = activity;
     gSpecialVar_Result = 0;
 }
 
-void sub_8014A40(u8 taskId)
+static void Task_MEvent_Leader(u8 taskId)
 {
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
     struct WindowTemplate winTemplate;
     s32 val;
 
     switch (data->state)
     {
     case 0:
-        gUnknown_02022C2C = data->field_18;
-        gUnknown_02022C2D = 2;
-        sub_8010F84(data->field_18, 0, 0);
-        sub_8010FA0(FALSE, FALSE);
-        sub_800B488();
+        gPlayerCurrActivity = data->activity;
+        sPlayerActivityGroupSize = 2;
+        SetHostRFUtgtGname(data->activity, 0, 0);
+        SetGnameBufferWonderFlags(FALSE, FALSE);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C10(2);
+        InitializeRfuLinkManager_LinkLeader(2);
         data->state = 1;
         break;
     case 1:
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0xA0);
-        data->field_8 = AllocZeroed(0xA0);
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 5);
-        sub_800DF90(&data->field_0->arr[0].unk.field_0, data->field_0->arr[0].unk.playerName);
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(5 * sizeof(struct UnkStruct_x20));
+        data->field_8 = AllocZeroed(5 * sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 5);
+        LinkRfu3_SetGnameUnameFromStaticBuffers(&data->field_0->arr[0].gname_uname.gname, data->field_0->arr[0].gname_uname.playerName);
         data->field_0->arr[0].field_18 = 0;
-        data->field_0->arr[0].field_1A_0 = 1;
+        data->field_0->arr[0].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
         data->field_0->arr[0].field_1A_1 = 0;
         data->field_0->arr[0].field_1B = 0;
-        data->field_17 = sub_8016FC0(data->field_4, 0xFF);
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, 0xFF);
 
         winTemplate = gUnknown_082F011C;
         winTemplate.baseBlock = GetMysteryGiftBaseBlock();
         winTemplate.paletteNum = 0xC;
         data->listWindowId = AddWindow(&winTemplate);
         MG_DrawTextBorder(data->listWindowId);
-        gMultiuseListMenuTemplate = gUnknown_082F015C;
+        gMultiuseListMenuTemplate = sListMenuTemplate_PossibleGroupMembers;
         gMultiuseListMenuTemplate.windowId = data->listWindowId;
         data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
         CopyBgTilemapBufferToVram(0);
-        data->field_13 = 1;
+        data->playerCount = 1;
         data->state = 2;
         break;
     case 2:
-        StringCopy(gStringVar1, sLinkGroupActivityTexts[gUnknown_02022C2C]);
-        sub_801262C(gStringVar4, gUnknown_02022C2C);
+        StringCopy(gStringVar1, sLinkGroupActivityTexts[gPlayerCurrActivity]);
+        StringExpandPlaceholders_AwaitingCommFromAnother(gStringVar4, gPlayerCurrActivity);
         data->state = 3;
         break;
     case 3:
@@ -1721,7 +1765,7 @@ void sub_8014A40(u8 taskId)
         data->state = 4;
         break;
     case 4:
-        sub_801320C(data, 5, 6);
+        Leader_SetStateIfMemberListChanged(data, 5, 6);
         if (gMain.newKeys & B_BUTTON)
         {
             data->state = 13;
@@ -1731,7 +1775,7 @@ void sub_8014A40(u8 taskId)
     case 6:
         if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sText_LinkWithFriendDropped))
         {
-            data->field_13 = sub_8013398(data->field_0);
+            data->playerCount = sub_8013398(data->field_0);
             RedrawListMenu(data->listTaskId);
             data->state = 2;
         }
@@ -1745,38 +1789,38 @@ void sub_8014A40(u8 taskId)
         case 0:
             LoadWirelessStatusIndicatorSpriteGfx();
             CreateWirelessStatusIndicatorSprite(0, 0);
-            data->field_0->arr[data->field_13].field_1B = 0;
+            data->field_0->arr[data->playerCount].field_1B = 0;
             RedrawListMenu(data->listTaskId);
             data->field_19 = 5;
-            sub_8010688(5, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+            SendByteToPartnerByIdAndName(5, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
             data->state = 8;
             break;
         case 1:
         case -1:
             data->field_19 = 6;
-            sub_8010688(6, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+            SendByteToPartnerByIdAndName(6, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
             data->state = 8;
             break;
         }
         break;
     case 8:
-        val = sub_8010714(ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+        val = WaitSendByteToPartnerByIdAndName(ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
         if (val == 1)
         {
             if (data->field_19 == 5)
             {
-                data->field_0->arr[data->field_13].field_1B = 0;
+                data->field_0->arr[data->playerCount].field_1B = 0;
                 RedrawListMenu(data->listTaskId);
-                data->field_13++;
-                sub_8018404(gStringVar1, &data->field_0->arr[data->field_13 - 1]);
+                data->playerCount++;
+                IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->playerCount - 1]);
                 StringExpandPlaceholders(gStringVar4, sText_AnOKWasSentToPlayer);
                 data->state = 9;
-                sub_800EF38();
+                LinkRfu_StopManagerAndFinalizeSlots();
             }
             else
             {
-                sub_8011DC0(data->field_0->arr[data->field_13].unk.playerName, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId));
-                data->field_0->arr[data->field_13].field_1A_0 = 0;
+                RequestDisconnectSlotByTrainerNameAndId(data->field_0->arr[data->playerCount].gname_uname.playerName, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId));
+                data->field_0->arr[data->playerCount].groupScheduledAnim = UNION_ROOM_SPAWN_NONE;
                 sub_8013398(data->field_0);
                 RedrawListMenu(data->listTaskId);
                 data->state = 2;
@@ -1786,7 +1830,7 @@ void sub_8014A40(u8 taskId)
         }
         else if (val == 2)
         {
-            sub_8011A64(0, 0);
+            RfuSetErrorStatus(0, 0);
             data->state = 2;
         }
         break;
@@ -1795,17 +1839,17 @@ void sub_8014A40(u8 taskId)
         data->state = 10;
         break;
     case 10:
-        if (++data->field_E > 120)
+        if (++data->delayTimerAfterOk > 120)
             data->state = 11;
         break;
     case 11:
-        if (!sub_801320C(data, 5, 6))
+        if (!Leader_SetStateIfMemberListChanged(data, 5, 6))
             data->state = 12;
         break;
     case 12:
-        if (sub_800EF1C())
+        if (LmanAcceptSlotFlagIsNotZero())
         {
-            sub_800EF58(FALSE);
+            WaitRfuState(FALSE);
             data->state = 15;
         }
         else
@@ -1815,11 +1859,11 @@ void sub_8014A40(u8 taskId)
         break;
     case 13:
         DestroyWirelessStatusIndicatorSprite();
-        sub_800EDD4();
+        LinkRfu_Shutdown();
         DestroyListMenuTask(data->listTaskId, 0, 0);
         CopyBgTilemapBufferToVram(0);
         RemoveWindow(data->listWindowId);
-        DestroyTask(data->field_17);
+        DestroyTask(data->listenTaskId);
         Free(data->field_8);
         Free(data->field_0);
         Free(data->field_4);
@@ -1833,13 +1877,13 @@ void sub_8014A40(u8 taskId)
         }
         break;
     case 15:
-        if (sub_8011A74() == 1 || sub_8011A74() == 2)
+        if (RfuGetErrorStatus() == 1 || RfuGetErrorStatus() == 2)
         {
             data->state = 13;
         }
         else if (gReceivedRemoteLinkPlayers != 0)
         {
-            sub_8011068(1);
+            UpdateGameData_GroupLockedIn(TRUE);
             data->state++;
         }
         break;
@@ -1847,7 +1891,7 @@ void sub_8014A40(u8 taskId)
         DestroyListMenuTask(data->listTaskId, 0, 0);
         CopyBgTilemapBufferToVram(0);
         RemoveWindow(data->listWindowId);
-        DestroyTask(data->field_17);
+        DestroyTask(data->listenTaskId);
         Free(data->field_8);
         Free(data->field_0);
         Free(data->field_4);
@@ -1861,36 +1905,36 @@ void sub_8014A40(u8 taskId)
     }
 }
 
-void MEvent_CreateTask_CardOrNewsWithFriend(u32 arg0)
+void MEvent_CreateTask_CardOrNewsWithFriend(u32 activity)
 {
     u8 taskId;
-    struct UnkStruct_Group *dataPtr;
+    struct WirelessLink_Group *data;
 
-    taskId = CreateTask(sub_8014F48, 0);
-    gUnknown_02022C30.group = dataPtr = (void*)(gTasks[taskId].data);
-    gUnknown_03000DA4 = dataPtr;
+    taskId = CreateTask(Task_CardOrNewsWithFriend, 0);
+    sWirelessLinkMain.group = data = (void*)(gTasks[taskId].data);
+    sGroup = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
-    dataPtr->field_12 = arg0 - 21;
+    data->state = 0;
+    data->textState = 0;
+    data->isWonderNews = activity - ACTIVITY_WONDER_CARD2;
     gSpecialVar_Result = 0;
 }
 
-void sub_8014F48(u8 taskId)
+static void Task_CardOrNewsWithFriend(u8 taskId)
 {
     s32 id;
     struct WindowTemplate winTemplate1, winTemplate2;
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
 
     switch (data->state)
     {
     case 0:
-        sub_8010F84(data->field_12 + 21, 0, 0);
-        sub_800B488();
+        SetHostRFUtgtGname(data->isWonderNews + ACTIVITY_WONDER_CARD2, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C5C();
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x200);
+        InitializeRfuLinkManager_JoinGroup();
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(16 * sizeof(struct UnkStruct_x20));
         data->state = 1;
         break;
     case 1:
@@ -1898,9 +1942,9 @@ void sub_8014F48(u8 taskId)
         data->state = 2;
         break;
     case 2:
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 16);
-        data->field_11 = sub_8016FC0(data->field_4, data->field_12 + 7);
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 16);
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, data->isWonderNews + LINK_GROUP_WONDER_CARD);
 
         winTemplate1 = gUnknown_082F0174;
         winTemplate1.baseBlock = GetMysteryGiftBaseBlock();
@@ -1909,25 +1953,25 @@ void sub_8014F48(u8 taskId)
 
         winTemplate2 = gUnknown_082F017C;
         winTemplate2.paletteNum = 0xC;
-        data->field_D = AddWindow(&winTemplate2);
+        data->playerNameAndIdWindowId = AddWindow(&winTemplate2);
 
         MG_DrawTextBorder(data->listWindowId);
-        gMultiuseListMenuTemplate = gUnknown_082F0204;
+        gMultiuseListMenuTemplate = sListMenuTemplate_UnionRoomGroups;
         gMultiuseListMenuTemplate.windowId = data->listWindowId;
         data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
-        MG_DrawTextBorder(data->field_D);
-        FillWindowPixelBuffer(data->field_D, PIXEL_FILL(1));
-        PutWindowTilemap(data->field_D);
-        sub_80125BC(data->field_D);
-        CopyWindowToVram(data->field_D, 2);
+        MG_DrawTextBorder(data->playerNameAndIdWindowId);
+        FillWindowPixelBuffer(data->playerNameAndIdWindowId, PIXEL_FILL(1));
+        PutWindowTilemap(data->playerNameAndIdWindowId);
+        PrintPlayerNameAndIdOnWindow(data->playerNameAndIdWindowId);
+        CopyWindowToVram(data->playerNameAndIdWindowId, 2);
 
         CopyBgTilemapBufferToVram(0);
-        data->field_F = 0;
+        data->leaderId = 0;
         data->state = 3;
         break;
     case 3:
-        id = sub_8013E44();
+        id = GetNewLeaderCandidate();
         switch (id)
         {
         case 1:
@@ -1941,16 +1985,16 @@ void sub_8014F48(u8 taskId)
             {
                 // this unused variable along with the assignment is needed to match
                 u32 unusedVar;
-                unusedVar  = data->field_0->arr[id].unk.field_0.activity;
+                unusedVar  = data->field_0->arr[id].gname_uname.gname.activity;
 
-                if (data->field_0->arr[id].field_1A_0 == 1 && !data->field_0->arr[id].unk.field_0.started)
+                if (data->field_0->arr[id].groupScheduledAnim == UNION_ROOM_SPAWN_IN && !data->field_0->arr[id].gname_uname.gname.started)
                 {
-                    data->field_F = id;
+                    data->leaderId = id;
                     LoadWirelessStatusIndicatorSpriteGfx();
                     CreateWirelessStatusIndicatorSprite(0, 0);
                     RedrawListMenu(data->listTaskId);
-                    sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
-                    sub_8011FC8(data->field_0->arr[data->field_F].unk.playerName, ReadAsU16(data->field_0->arr[data->field_F].unk.field_0.unk_00.playerTrainerId));
+                    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
+                    CreateTask_RfuReconnectWithParent(data->field_0->arr[data->leaderId].gname_uname.playerName, ReadAsU16(data->field_0->arr[data->leaderId].gname_uname.gname.unk_00.playerTrainerId));
                     PlaySE(SE_PN_ON);
                     data->state = 4;
                 }
@@ -1968,17 +2012,17 @@ void sub_8014F48(u8 taskId)
         break;
     case 4:
         AddTextPrinterToWindow1(sText_AwaitingPlayersResponse);
-        sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
+        IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
         data->state = 5;
         break;
     case 5:
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
         {
-            gUnknown_02022C2C = data->field_0->arr[data->field_F].unk.field_0.activity;
+            gPlayerCurrActivity = data->field_0->arr[data->leaderId].gname_uname.gname.activity;
             data->state = 10;
         }
 
-        switch (sub_8011A74())
+        switch (RfuGetErrorStatus())
         {
         case 1:
         case 2:
@@ -1987,7 +2031,7 @@ void sub_8014F48(u8 taskId)
             break;
         case 5:
             AddTextPrinterToWindow1(sText_PlayerSentBackOK);
-            sub_8011A64(0, 0);
+            RfuSetErrorStatus(0, 0);
             break;
         }
         break;
@@ -1996,19 +2040,19 @@ void sub_8014F48(u8 taskId)
     case 10:
         DestroyListMenuTask(data->listTaskId, 0, 0);
         CopyBgTilemapBufferToVram(0);
-        RemoveWindow(data->field_D);
+        RemoveWindow(data->playerNameAndIdWindowId);
         RemoveWindow(data->listWindowId);
-        DestroyTask(data->field_11);
+        DestroyTask(data->listenTaskId);
         Free(data->field_0);
         Free(data->field_4);
         data->state++;
         break;
     case 9:
-        if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sLinkDroppedTexts[sub_8011A74()]))
+        if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sLinkDroppedTexts[RfuGetErrorStatus()]))
         {
             DestroyWirelessStatusIndicatorSprite();
             DestroyTask(taskId);
-            sub_800EDD4();
+            LinkRfu_Shutdown();
             gSpecialVar_Result = 5;
         }
         break;
@@ -2016,7 +2060,7 @@ void sub_8014F48(u8 taskId)
         DestroyWirelessStatusIndicatorSprite();
         AddTextPrinterToWindow1(sText_PleaseStartOver);
         DestroyTask(taskId);
-        sub_800EDD4();
+        LinkRfu_Shutdown();
         gSpecialVar_Result = 5;
         break;
     case 11:
@@ -2030,36 +2074,36 @@ void sub_8014F48(u8 taskId)
     }
 }
 
-void MEvent_CreateTask_CardOrNewsOverWireless(u32 arg0)
+void MEvent_CreateTask_CardOrNewsOverWireless(u32 activity)
 {
     u8 taskId;
-    struct UnkStruct_Group *dataPtr;
+    struct WirelessLink_Group *data;
 
-    taskId = CreateTask(sub_80152F4, 0);
-    gUnknown_02022C30.group = dataPtr = (void*)(gTasks[taskId].data);
-    gUnknown_03000DA4 = dataPtr;
+    taskId = CreateTask(Task_CardOrNewsOverWireless, 0);
+    sWirelessLinkMain.group = data = (void*)(gTasks[taskId].data);
+    sGroup = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
-    dataPtr->field_12 = arg0 - 21;
+    data->state = 0;
+    data->textState = 0;
+    data->isWonderNews = activity - ACTIVITY_WONDER_CARD2;
     gSpecialVar_Result = 0;
 }
 
-void sub_80152F4(u8 taskId)
+static void Task_CardOrNewsOverWireless(u8 taskId)
 {
     s32 id;
     struct WindowTemplate winTemplate;
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
 
     switch (data->state)
     {
     case 0:
-        sub_8010F84(0, 0, 0);
-        sub_800B488();
+        SetHostRFUtgtGname(0, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C5C();
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x200);
+        InitializeRfuLinkManager_JoinGroup();
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(16 * sizeof(struct UnkStruct_x20));
         data->state = 1;
         break;
     case 1:
@@ -2067,9 +2111,9 @@ void sub_80152F4(u8 taskId)
         data->state = 2;
         break;
     case 2:
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 16);
-        data->field_11 = sub_8016FF0(data->field_4, data->field_12 + 7);
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 16);
+        data->listenTaskId = CreateTask_ListenForPartnersWithSerial7F7D(data->field_4, data->isWonderNews + LINK_GROUP_WONDER_CARD);
 
         if (data->field_13 != 0)
         {
@@ -2078,18 +2122,18 @@ void sub_80152F4(u8 taskId)
             data->listWindowId = AddWindow(&winTemplate);
 
             MG_DrawTextBorder(data->listWindowId);
-            gMultiuseListMenuTemplate = gUnknown_082F0204;
+            gMultiuseListMenuTemplate = sListMenuTemplate_UnionRoomGroups;
             gMultiuseListMenuTemplate.windowId = data->listWindowId;
             data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
             CopyBgTilemapBufferToVram(0);
         }
 
-        data->field_F = 0;
+        data->leaderId = 0;
         data->state = 3;
         break;
     case 3:
-        id = sub_8013E44();
+        id = GetNewLeaderCandidate();
         switch (id)
         {
         case 1:
@@ -2101,17 +2145,17 @@ void sub_80152F4(u8 taskId)
         case 0:
             if (data->field_13 != 0)
                 id = ListMenu_ProcessInput(data->listTaskId);
-            if (data->field_14 > 120)
+            if (data->refreshTimer > 120)
             {
-                if (data->field_0->arr[0].field_1A_0 == 1 && !data->field_0->arr[0].unk.field_0.started)
+                if (data->field_0->arr[0].groupScheduledAnim == UNION_ROOM_SPAWN_IN && !data->field_0->arr[0].gname_uname.gname.started)
                 {
-                    if (sub_8016F1C(&data->field_0->arr[0].unk.field_0, data->field_12 + 7))
+                    if (GetGnameWonderFlagByLinkGroup(&data->field_0->arr[0].gname_uname.gname, data->isWonderNews + LINK_GROUP_WONDER_CARD))
                     {
-                        data->field_F = 0;
-                        data->field_14 = 0;
+                        data->leaderId = 0;
+                        data->refreshTimer = 0;
                         LoadWirelessStatusIndicatorSpriteGfx();
                         CreateWirelessStatusIndicatorSprite(0, 0);
-                        sub_8011FC8(data->field_0->arr[0].unk.playerName, ReadAsU16(data->field_0->arr[0].unk.field_0.unk_00.playerTrainerId));
+                        CreateTask_RfuReconnectWithParent(data->field_0->arr[0].gname_uname.playerName, ReadAsU16(data->field_0->arr[0].gname_uname.gname.unk_00.playerTrainerId));
                         PlaySE(SE_PN_ON);
                         data->state = 4;
                     }
@@ -2125,25 +2169,25 @@ void sub_80152F4(u8 taskId)
             else if (gMain.newKeys & B_BUTTON)
             {
                 data->state = 6;
-                data->field_14 = 0;
+                data->refreshTimer = 0;
             }
-            data->field_14++;
+            data->refreshTimer++;
             break;
         }
         break;
     case 4:
         AddTextPrinterToWindow1(sText_AwaitingResponseFromWirelessSystem);
-        sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
+        IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
         data->state = 5;
         break;
     case 5:
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
         {
-            gUnknown_02022C2C = data->field_0->arr[data->field_F].unk.field_0.activity;
+            gPlayerCurrActivity = data->field_0->arr[data->leaderId].gname_uname.gname.activity;
             data->state = 12;
         }
 
-        switch (sub_8011A74())
+        switch (RfuGetErrorStatus())
         {
         case 1:
         case 2:
@@ -2152,7 +2196,7 @@ void sub_80152F4(u8 taskId)
             break;
         case 5:
             AddTextPrinterToWindow1(sText_WirelessLinkEstablished);
-            sub_8011A64(0, 0);
+            RfuSetErrorStatus(0, 0);
             break;
         }
         break;
@@ -2166,7 +2210,7 @@ void sub_80152F4(u8 taskId)
             CopyBgTilemapBufferToVram(0);
             RemoveWindow(data->listWindowId);
         }
-        DestroyTask(data->field_11);
+        DestroyTask(data->listenTaskId);
         Free(data->field_0);
         Free(data->field_4);
         data->state++;
@@ -2176,7 +2220,7 @@ void sub_80152F4(u8 taskId)
         {
             DestroyWirelessStatusIndicatorSprite();
             DestroyTask(taskId);
-            sub_800EDD4();
+            LinkRfu_Shutdown();
             gSpecialVar_Result = 5;
         }
         break;
@@ -2185,16 +2229,16 @@ void sub_80152F4(u8 taskId)
         {
             DestroyWirelessStatusIndicatorSprite();
             DestroyTask(taskId);
-            sub_800EDD4();
+            LinkRfu_Shutdown();
             gSpecialVar_Result = 5;
         }
         break;
     case 11:
-        if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sNoWonderSharedTexts[data->field_12]))
+        if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sNoWonderSharedTexts[data->isWonderNews]))
         {
             DestroyWirelessStatusIndicatorSprite();
             DestroyTask(taskId);
-            sub_800EDD4();
+            LinkRfu_Shutdown();
             gSpecialVar_Result = 5;
         }
         break;
@@ -2211,35 +2255,35 @@ void sub_80152F4(u8 taskId)
 
 void UnionRoomSpecial(void)
 {
-    struct UnkStruct_URoom *dataPtr;
+    struct WirelessLink_URoom *data;
 
-    sub_8010F60();
-    CreateTask(sub_80156E0, 10);
+    ClearAndInitHostRFUtgtGname();
+    CreateTask(Task_RunUnionRoom, 10);
 
     // dumb line needed to match
-    gUnknown_02022C30.uRoom = gUnknown_02022C30.uRoom;
+    sWirelessLinkMain.uRoom = sWirelessLinkMain.uRoom;
 
-    dataPtr = AllocZeroed(sizeof(*gUnknown_02022C30.uRoom));
-    gUnknown_02022C30.uRoom = dataPtr;
-    gUnknown_03000DA8 = dataPtr;
+    data = AllocZeroed(sizeof(*sWirelessLinkMain.uRoom));
+    sWirelessLinkMain.uRoom = data;
+    sURoom = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
-    dataPtr->field_10 = 0;
-    dataPtr->field_12 = 0;
+    data->state = 0;
+    data->textState = 0;
+    data->field_10 = 0;
+    data->field_12 = 0;
 
     gSpecialVar_Result = 0;
-    sub_819A2BC(0xD0, 1);
+    ListMenuLoadStdPalAt(0xD0, 1);
 }
 
-u16 ReadAsU16(const u8 *ptr)
+static u16 ReadAsU16(const u8 *ptr)
 {
     return (ptr[1] << 8) | (ptr[0]);
 }
 
-void sub_8015664(u32 nextState, const u8 *src)
+static void ScheduleFieldMessageWithFollowupState(u32 nextState, const u8 *src)
 {
-    struct UnkStruct_URoom *data = gUnknown_02022C30.uRoom;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
 
     data->state = 8;
     data->stateAfterPrint = nextState;
@@ -2247,83 +2291,83 @@ void sub_8015664(u32 nextState, const u8 *src)
         StringExpandPlaceholders(gStringVar4, src);
 }
 
-void sub_801568C(const u8 *src)
+static void ScheduleFieldMessageAndExit(const u8 *src)
 {
-    struct UnkStruct_URoom *data = gUnknown_02022C30.uRoom;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
 
     data->state = 26;
     if (src != gStringVar4)
         StringExpandPlaceholders(gStringVar4, src);
 }
 
-void sub_80156B0(struct UnkStruct_URoom *data)
+static void sub_80156B0(struct WirelessLink_URoom *data)
 {
     memcpy(&gDecompressionBuffer[0x3F00], data->field_0, 0x100);
 }
 
-void sub_80156C8(struct UnkStruct_URoom *data)
+static void sub_80156C8(struct WirelessLink_URoom *data)
 {
     memcpy(data->field_0, &gDecompressionBuffer[0x3F00], 0x100);
 }
 
-void sub_80156E0(u8 taskId)
+static void Task_RunUnionRoom(u8 taskId)
 {
     u32 id = 0;
     s32 var5 = 0;
-    s32 playerGender = 0;
-    struct UnkStruct_URoom *data = gUnknown_02022C30.uRoom;
+    s32 playerGender = MALE;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
     s16 *taskData = gTasks[taskId].data;
 
     switch (data->state)
     {
     case 0:
-        data->field_4 = AllocZeroed(0x70);
-        data->field_C = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x100);
-        data->field_8 = AllocZeroed(0x20);
-        sub_8017580(data->field_0->arr, 8);
-        gUnknown_02022C2C = 0x40;
-        data->field_20 = sub_8016DF0(data->field_C, data->field_4, 9);
+        data->field_4 = AllocZeroed(RFU_CHILD_MAX * sizeof(struct UnkStruct_x1C));
+        data->field_C = AllocZeroed(RFU_CHILD_MAX * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(8 * sizeof(struct UnkStruct_x20));
+        data->field_8 = AllocZeroed(sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x20Array(data->field_0->arr, 8);
+        gPlayerCurrActivity = IN_UNION_ROOM;
+        data->field_20 = CreateTask_SearchForChildOrParent(data->field_C, data->field_4, LINK_GROUP_UNION_ROOM_RESUME);
         sub_8019BA8(data->field_A0);
         sub_8019F2C();
         data->state = 1;
         break;
     case 1:
-        sub_8019E70(data->spriteIds, taskData[0]);
+        CreateGroupMemberObjectsInvisible(data->spriteIds, taskData[0]);
         if (++taskData[0] == 8)
             data->state = 2;
         break;
     case 2:
-        sub_8010F84(0x40, 0, 0);
+        SetHostRFUtgtGname(IN_UNION_ROOM, 0, 0);
         sub_8010FCC(sUnionRoomTrade.type, sUnionRoomTrade.playerSpecies, sUnionRoomTrade.playerLevel);
-        sub_800B488();
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C84();
-        sub_8017580(&data->field_8->arr[0], 1);
-        sub_80175EC(data->field_4, 4);
-        sub_80175EC(data->field_C, 4);
+        InitializeRfuLinkManager_EnterUnionRoom();
+        ClearUnkStruct_x20Array(&data->field_8->arr[0], 1);
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x1CArray(data->field_C, 4);
         gSpecialVar_Result = 0;
         data->state = 3;
         break;
     case 3:
         if ((GetPartyMenuType() == PARTY_MENU_TYPE_UNION_ROOM_REGISTER 
-           || GetPartyMenuType() == PARTY_MENU_TYPE_UNION_ROOM_TRADE) 
+          || GetPartyMenuType() == PARTY_MENU_TYPE_UNION_ROOM_TRADE) 
            && sUnionRoomTrade.field_0 != 0)
         {
             id = GetCursorSelectionMonId();
             switch (sUnionRoomTrade.field_0)
             {
             case 1:
-                sub_8011090(0x54, 0, 1);
+                UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, TRUE);
                 if (id >= PARTY_SIZE)
                 {
                     ResetUnionRoomTrade(&sUnionRoomTrade);
                     sub_8010FCC(0, 0, 0);
-                    sub_801568C(sText_RegistrationCanceled);
+                    ScheduleFieldMessageAndExit(sText_RegistrationCanceled);
                 }
                 else if (!RegisterTradeMonAndGetIsEgg(GetCursorSelectionMonId(), &sUnionRoomTrade))
                 {
-                    sub_8015664(0x34, sText_ChooseRequestedMonType);
+                    ScheduleFieldMessageWithFollowupState(52, sText_ChooseRequestedMonType);
                 }
                 else
                 {
@@ -2335,12 +2379,12 @@ void sub_80156E0(u8 taskId)
                 taskData[1] = sUnionRoomTrade.field_8;
                 if (id >= PARTY_SIZE)
                 {
-                    sub_801568C(sText_TradeCanceled);
+                    ScheduleFieldMessageAndExit(sText_TradeCanceled);
                 }
                 else
                 {
-                    sub_8011090(0x54, 0, 1);
-                    gUnknown_02022C2C = 0x44;
+                    UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, TRUE);
+                    gPlayerCurrActivity = ACTIVITY_TRADE | IN_UNION_ROOM;
                     RegisterTradeMon(GetCursorSelectionMonId(), &sUnionRoomTrade);
                     data->state = 51;
                 }
@@ -2358,7 +2402,7 @@ void sub_80156E0(u8 taskId)
         {
             if (gSpecialVar_Result == 9)
             {
-                sub_8011090(0x54, 0, 1);
+                UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
                 PlaySE(SE_PC_LOGIN);
                 StringCopy(gStringVar1, gSaveBlock2Ptr->playerName);
                 data->state = 42;
@@ -2366,7 +2410,7 @@ void sub_80156E0(u8 taskId)
             }
             else if (gSpecialVar_Result == 11)
             {
-                sub_8011090(0x54, 0, 1);
+                UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
                 data->state = 23;
                 gSpecialVar_Result = 0;
             }
@@ -2382,146 +2426,146 @@ void sub_80156E0(u8 taskId)
         {
             if (gMain.newKeys & A_BUTTON)
             {
-                if (sub_801A2A8(data->field_0, &taskData[0], &taskData[1], data->spriteIds))
+                if (RfuUnionTool_GetGroupAndMemberInFrontOfPlayer(data->field_0, &taskData[0], &taskData[1], data->spriteIds))
                 {
                     PlaySE(SE_SELECT);
-                    sub_80181CC();
+                    UR_EnableScriptContext2AndFreezeObjectEvents();
                     data->state = 24;
                     break;
                 }
-                else if (sub_8017940())
+                else if (PlayerIsTalkingToUnionRoomAide())
                 {
-                    sub_8011090(0x54, 0, 1);
+                    UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
                     PlaySE(SE_PC_LOGIN);
-                    sub_80181CC();
+                    UR_EnableScriptContext2AndFreezeObjectEvents();
                     StringCopy(gStringVar1, gSaveBlock2Ptr->playerName);
                     data->state = 45;
                     break;
                 }
             }
 
-            switch (sub_8016B00())
+            switch (HandlePlayerListUpdate())
             {
             case 1:
                 PlaySE(SE_PC_LOGIN);
             case 2:
-                sub_801A274(data);
+                ScheduleUnionRoomPlayerRefresh(data);
                 break;
             case 4:
                 data->state = 11;
-                sub_80181CC();
+                UR_EnableScriptContext2AndFreezeObjectEvents();
                 sub_8010FCC(0, 0, 0);
-                sub_8011090(0x53, sub_80181DC(data), 0);
+                UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_NPCTALK | IN_UNION_ROOM, GetActivePartnerSpriteGenderParam(data), 0);
                 break;
             }
-            sub_801A284(data);
+            HandleUnionRoomPlayerRefresh(data);
         }
         break;
     case 23:
         if (!FuncIsActiveTask(Task_ShowStartMenu))
         {
-            sub_8011090(0x40, 0, 0);
+            UpdateGameDataWithActivitySpriteGendersFlag(IN_UNION_ROOM, 0, FALSE);
             data->state = 4;
         }
         break;
     case 24:
-        sub_801704C();
-        playerGender = sub_8017CF8(taskData[1], data->field_0);
-        sub_8011090(0x54, 0, 1);
-        switch (sub_80179D4(data->field_0, taskData[0], taskData[1], playerGender))
+        UR_RunTextPrinters_CheckPrinter0Active();
+        playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+        UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
+        switch (UnionRoomGetPlayerInteractionResponse(data->field_0, taskData[0], taskData[1], playerGender))
         {
         case 0:
             data->state = 26;
             break;
         case 1:
-            sub_8012188(data->field_0->arr[taskData[1]].unk.playerName, &data->field_0->arr[taskData[1]].unk.field_0, gUnknown_02022C2C);
+            sub_8012188(data->field_0->arr[taskData[1]].gname_uname.playerName, &data->field_0->arr[taskData[1]].gname_uname.gname, gPlayerCurrActivity);
             data->field_12 = id; // Should be just 0, but won't match any other way.
             data->state = 25;
             break;
         case 2:
-            sub_8015664(0x13, gStringVar4);
+            ScheduleFieldMessageWithFollowupState(19, gStringVar4);
             break;
         }
         break;
     case 25:
-        sub_801704C();
-        switch (sub_8011A74())
+        UR_RunTextPrinters_CheckPrinter0Active();
+        switch (RfuGetErrorStatus())
         {
         case 4:
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
             break;
         case 1:
         case 2:
-            if (sub_8011B90() == TRUE)
-                sub_801568C(sText_TrainerAppearsBusy);
+            if (IsUnionRoomListenTaskActive() == TRUE)
+                ScheduleFieldMessageAndExit(sText_TrainerAppearsBusy);
             else
-                sub_8015664(30, sText_TrainerAppearsBusy);
+                ScheduleFieldMessageWithFollowupState(30, sText_TrainerAppearsBusy);
 
-            gUnknown_02022C2C = 0x40;
+            gPlayerCurrActivity = IN_UNION_ROOM;
             break;
         }
 
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
         {
-            sub_80143E4(gBlockSendBuffer, TRUE);
-            CreateTask(sub_80140E0, 5);
+            CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
+            CreateTask(Task_ExchangeCards, 5);
             data->state = 38;
         }
         break;
     case 38:
-        if (!FuncIsActiveTask(sub_80140E0))
+        if (!FuncIsActiveTask(Task_ExchangeCards))
         {
-            if (gUnknown_02022C2C == 0x44)
-                sub_8015664(31, sText_AwaitingPlayersResponseAboutTrade);
+            if (gPlayerCurrActivity == (ACTIVITY_TRADE | IN_UNION_ROOM))
+                ScheduleFieldMessageWithFollowupState(31, sText_AwaitingPlayersResponseAboutTrade);
             else
                 data->state = 5;
         }
         break;
     case 30:
-        if (gReceivedRemoteLinkPlayers == 0)
+        if (!gReceivedRemoteLinkPlayers)
         {
-            sub_801818C(FALSE);
-            sub_801A3D0(taskData[0], taskData[1], data->field_0);
+            HandleCancelTrade(FALSE);
+            UpdateUnionGroupMemberFacing(taskData[0], taskData[1], data->field_0);
             data->state = 2;
         }
         break;
     case 5:
-        id = sub_80179AC(&data->field_0->arr[taskData[1]]);
-        playerGender = sub_8017CF8(taskData[1], data->field_0);
-        sub_8015664(6, sHiDoSomethingTexts[id][playerGender]);
+        id = ConvPartnerUnameAndGetWhetherMetAlready(&data->field_0->arr[taskData[1]]);
+        playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+        ScheduleFieldMessageWithFollowupState(6, sHiDoSomethingTexts[id][playerGender]);
         break;
     case 6:
-        var5 = sub_8017178(&data->textState, &data->field_1B, &data->field_1C, &gUnknown_082F021C, &gUnknown_082F0244);
+        var5 = ListMenuHandler_AllItemsAvailable(&data->textState, &data->topListMenuWindowId, &data->topListMenuId, &sWindowTemplate_InviteToActivity, &sListMenuTemplate_InviteToActivity);
         if (var5 != -1)
         {
-            if (gReceivedRemoteLinkPlayers == 0)
+            if (!gReceivedRemoteLinkPlayers)
             {
                 data->state = 28;
             }
             else
             {
-                data->field_98 = 0;
-                playerGender = sub_8017CF8(taskData[1], data->field_0);
-                if (var5 == -2 || var5 == 0x40)
+                data->partnerYesNoResponse = 0;
+                playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+                if (var5 == -2 || var5 == IN_UNION_ROOM)
                 {
-                    data->field_4C[0] = 0x40;
-                    sub_800FE50(data->field_4C);
+                    data->playerSendBuffer[0] = IN_UNION_ROOM;
+                    sub_800FE50(data->playerSendBuffer);
                     StringCopy(gStringVar4, sIfYouWantToDoSomethingTexts[gLinkPlayers[0].gender]);
                     data->state = 32;
                 }
                 else
                 {
-                    gUnknown_02022C2C = var5;
-                    gUnknown_02022C2D = (u32)(var5) >> 8;
-                    if (gUnknown_02022C2C == 0x41 && !HasAtLeastTwoMonsOfLevel30OrLower())
+                    gPlayerCurrActivity = var5;
+                    sPlayerActivityGroupSize = (u32)(var5) >> 8;
+                    if (gPlayerCurrActivity == (ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM) && !HasAtLeastTwoMonsOfLevel30OrLower())
                     {
-                        sub_8015664(5, sText_NeedTwoMonsOfLevel30OrLower1);
+                        ScheduleFieldMessageWithFollowupState(5, sText_NeedTwoMonsOfLevel30OrLower1);
                     }
                     else
                     {
-                        data->field_4C[0] = gUnknown_02022C2C | 0x40;
-                        sub_800FE50(data->field_4C);
+                        data->playerSendBuffer[0] = gPlayerCurrActivity | 0x40;
+                        sub_800FE50(data->playerSendBuffer);
                         data->state = 27;
                     }
                 }
@@ -2533,9 +2577,9 @@ void sub_80156E0(u8 taskId)
         data->state = 36;
         break;
     case 27:
-        sub_8017FD8(data);
-        playerGender = sub_8017CF8(taskData[1], data->field_0);
-        id = sub_8017984(data->field_4C[0] & 0x3F);
+        PollPartnerYesNoResponse(data);
+        playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+        id = GetResponseIdx_InviteToURoomActivity(data->playerSendBuffer[0] & 0x3F);
         if (PrintOnTextbox(&data->textState, sText_WaitOrShowCardTexts[playerGender][id]))
         {
             taskData[3] = 0;
@@ -2547,26 +2591,26 @@ void sub_80156E0(u8 taskId)
         data->state = 36;
         break;
     case 31:
-        data->field_4C[0] = 0x44;
-        data->field_4C[1] = sUnionRoomTrade.species;
-        data->field_4C[2] = sUnionRoomTrade.level;
-        sub_800FE50(data->field_4C);
+        data->playerSendBuffer[0] = ACTIVITY_TRADE | IN_UNION_ROOM;
+        data->playerSendBuffer[1] = sUnionRoomTrade.species;
+        data->playerSendBuffer[2] = sUnionRoomTrade.level;
+        sub_800FE50(data->playerSendBuffer);
         data->state = 29;
         break;
     case 29:
-        if (gReceivedRemoteLinkPlayers == 0)
+        if (!gReceivedRemoteLinkPlayers)
         {
             StringCopy(gStringVar4, sText_TrainerBattleBusy);
             data->state = 28;
         }
         else
         {
-            sub_8017FD8(data);
-            if (data->field_98 == 0x51)
+            PollPartnerYesNoResponse(data);
+            if (data->partnerYesNoResponse == (ACTIVITY_ACCEPT | IN_UNION_ROOM))
             {
-                if (gUnknown_02022C2C == 8)
+                if (gPlayerCurrActivity == ACTIVITY_CARD)
                 {
-                    sub_8018220(gStringVar4, data, FALSE);
+                    ViewURoomPartnerTrainerCard(gStringVar4, data, FALSE);
                     data->state = 40;
                 }
                 else
@@ -2574,27 +2618,27 @@ void sub_80156E0(u8 taskId)
                     data->state = 13;
                 }
             }
-            else if (data->field_98 == 0x52)
+            else if (data->partnerYesNoResponse == (ACTIVITY_DECLINE | IN_UNION_ROOM))
             {
                 data->state = 32;
-                sub_8017D9C(gStringVar4, gUnknown_02022C2C | 0x40, gLinkPlayers[0].gender);
-                gUnknown_02022C2C = 0;
+                GetURoomActivityRejectMsg(gStringVar4, gPlayerCurrActivity | IN_UNION_ROOM, gLinkPlayers[0].gender);
+                gPlayerCurrActivity = ACTIVITY_NONE;
             }
         }
         break;
 
     case 7:
-        id = sub_80179AC(&data->field_0->arr[taskData[1]]);
-        playerGender = sub_8017CF8(taskData[1], data->field_0);
-        sub_8015664(6, sHiDoSomethingTexts[id][playerGender]);
+        id = ConvPartnerUnameAndGetWhetherMetAlready(&data->field_0->arr[taskData[1]]);
+        playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+        ScheduleFieldMessageWithFollowupState(6, sHiDoSomethingTexts[id][playerGender]);
         break;
     case 40:
         if (PrintOnTextbox(&data->textState, gStringVar4))
         {
             data->state = 41;
             sub_800ADF8();
-            data->field_98 = 0;
-            data->field_9A[0] = 0;
+            data->partnerYesNoResponse = 0;
+            data->recvActivityRequest[0] = 0;
         }
         break;
     case 41:
@@ -2603,7 +2647,7 @@ void sub_80156E0(u8 taskId)
             if (GetMultiplayerId() == 0)
             {
                 StringCopy(gStringVar1, gLinkPlayers[GetMultiplayerId() ^ 1].name);
-                id = sub_800E540(gLinkPlayers[1].trainerId, gLinkPlayers[1].name);
+                id = PlayerHasMetTrainerBefore(gLinkPlayers[1].trainerId, gLinkPlayers[1].name);
                 StringExpandPlaceholders(gStringVar4, sAwaitingResponseTexts[id]);
                 data->state = 33;
             }
@@ -2614,21 +2658,21 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 19:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             CopyBgTilemapBufferToVram(0);
-            gUnknown_02022C2C = 0x45;
-            sub_8011090(0x45, 0, 1);
-            sub_8012188(data->field_0->arr[taskData[1]].unk.playerName, &data->field_0->arr[taskData[1]].unk.field_0, gUnknown_02022C2C);
+            gPlayerCurrActivity = ACTIVITY_CHAT | IN_UNION_ROOM;
+            UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_CHAT | IN_UNION_ROOM, 0, 1);
+            sub_8012188(data->field_0->arr[taskData[1]].gname_uname.playerName, &data->field_0->arr[taskData[1]].gname_uname.gname, gPlayerCurrActivity);
             data->field_12 = taskData[1];
             data->state = 20;
             taskData[3] = 0;
             break;
         case 1:
         case -1:
-            playerGender = sub_8017CF8(taskData[1], data->field_0);
-            sub_801568C(sDeclineBattleTexts[playerGender]);
+            playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+            ScheduleFieldMessageAndExit(sDeclineBattleTexts[playerGender]);
             break;
         }
         break;
@@ -2640,20 +2684,20 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 21:
-        switch (sub_8011A74())
+        switch (RfuGetErrorStatus())
         {
         case 4:
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
             break;
         case 1:
         case 2:
-            playerGender = sub_8017CF8(taskData[1], data->field_0);
-            sub_8011090(0x54, 0, 1);
-            if (sub_8011B90() == TRUE)
-                sub_801568C(sChatDeclinedTexts[playerGender]);
+            playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+            UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
+            if (IsUnionRoomListenTaskActive() == TRUE)
+                ScheduleFieldMessageAndExit(sChatDeclinedTexts[playerGender]);
             else
-                sub_8015664(30, sChatDeclinedTexts[playerGender]);
+                ScheduleFieldMessageWithFollowupState(30, sChatDeclinedTexts[playerGender]);
             break;
         case 3:
             data->state = 22;
@@ -2662,55 +2706,55 @@ void sub_80156E0(u8 taskId)
         taskData[3]++;
         break;
     case 22:
-        if (sub_8011A80())
+        if (RfuIsErrorStatus1or2())
         {
-            playerGender = sub_8017CF8(taskData[1], data->field_0);
-            sub_8011090(0x54, 0, 1);
-            if (sub_8011B90() == TRUE)
-                sub_801568C(sChatDeclinedTexts[playerGender]);
+            playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+            UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
+            if (IsUnionRoomListenTaskActive() == TRUE)
+                ScheduleFieldMessageAndExit(sChatDeclinedTexts[playerGender]);
             else
-                sub_8015664(30, sChatDeclinedTexts[playerGender]);
+                ScheduleFieldMessageWithFollowupState(30, sChatDeclinedTexts[playerGender]);
         }
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
             data->state = 16;
         break;
     case 11:
         PlaySE(SE_PINPON);
         sub_800EF7C();
         data->state = 12;
-        data->field_9A[0] = 0;
+        data->recvActivityRequest[0] = 0;
         break;
     case 12:
-        if (sub_8011A80())
+        if (RfuIsErrorStatus1or2())
         {
-            sub_801818C(FALSE);
+            HandleCancelTrade(FALSE);
             data->state = 2;
         }
-        else if (gReceivedRemoteLinkPlayers != 0)
+        else if (gReceivedRemoteLinkPlayers)
         {
-            sub_80143E4(gBlockSendBuffer, TRUE);
-            CreateTask(sub_80140E0, 5);
+            CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
+            CreateTask(Task_ExchangeCards, 5);
             data->state = 39;
         }
         break;
     case 39:
-        sub_801689C(data);
-        if (!FuncIsActiveTask(sub_80140E0))
+        ReceiveUnionRoomActivityPacket(data);
+        if (!FuncIsActiveTask(Task_ExchangeCards))
         {
             data->state = 33;
             StringCopy(gStringVar1, gLinkPlayers[1].name);
-            id = sub_800E540(gLinkPlayers[1].trainerId, gLinkPlayers[1].name);
+            id = PlayerHasMetTrainerBefore(gLinkPlayers[1].trainerId, gLinkPlayers[1].name);
             StringExpandPlaceholders(gStringVar4, sPlayerContactedYouTexts[id]);
         }
         break;
     case 33:
-        sub_801689C(data);
+        ReceiveUnionRoomActivityPacket(data);
         if (PrintOnTextbox(&data->textState, gStringVar4))
             data->state = 34;
         break;
     case 34:
-        sub_801689C(data);
-        if (sub_80168DC(data) && gMain.newKeys & B_BUTTON)
+        ReceiveUnionRoomActivityPacket(data);
+        if (UnionRoom_HandleContactFromOtherPlayer(data) && gMain.newKeys & B_BUTTON)
         {
             sub_8011DE0(1);
             StringCopy(gStringVar4, sText_ChatEnded);
@@ -2718,53 +2762,53 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 35:
-        sub_8015664(9, gStringVar4);
+        ScheduleFieldMessageWithFollowupState(9, gStringVar4);
         break;
     case 9:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
-            data->field_4C[0] = 0x51;
-            if (gUnknown_02022C2C == 0x45)
-                sub_8011090(gUnknown_02022C2C | 0x40, sub_801100C(1), 0);
+            data->playerSendBuffer[0] = ACTIVITY_ACCEPT | IN_UNION_ROOM;
+            if (gPlayerCurrActivity == (ACTIVITY_CHAT | IN_UNION_ROOM))
+                UpdateGameDataWithActivitySpriteGendersFlag(gPlayerCurrActivity | 0x40, sub_801100C(1), 0);
             else
-                sub_8011090(gUnknown_02022C2C | 0x40, sub_801100C(1), 1);
+                UpdateGameDataWithActivitySpriteGendersFlag(gPlayerCurrActivity | 0x40, sub_801100C(1), 1);
 
             data->field_8->arr[0].field_1B = 0;
             taskData[3] = 0;
-            if (gUnknown_02022C2C == 0x41)
+            if (gPlayerCurrActivity == (ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM))
             {
                 if (!HasAtLeastTwoMonsOfLevel30OrLower())
                 {
-                    data->field_4C[0] = 0x52;
-                    sub_800FE50(data->field_4C);
+                    data->playerSendBuffer[0] = ACTIVITY_DECLINE | IN_UNION_ROOM;
+                    sub_800FE50(data->playerSendBuffer);
                     data->state = 10;
                     StringCopy(gStringVar4, sText_NeedTwoMonsOfLevel30OrLower2);
                 }
                 else
                 {
-                    sub_800FE50(data->field_4C);
+                    sub_800FE50(data->playerSendBuffer);
                     data->state = 13;
                 }
             }
-            else if (gUnknown_02022C2C == 0x48)
+            else if (gPlayerCurrActivity == (ACTIVITY_CARD | IN_UNION_ROOM))
             {
-                sub_800FE50(data->field_4C);
-                sub_8018220(gStringVar4, data, 1);
+                sub_800FE50(data->playerSendBuffer);
+                ViewURoomPartnerTrainerCard(gStringVar4, data, TRUE);
                 data->state = 40;
             }
             else
             {
-                sub_800FE50(data->field_4C);
+                sub_800FE50(data->playerSendBuffer);
                 data->state = 13;
             }
             break;
         case 1:
         case -1:
-            data->field_4C[0] = 0x52;
-            sub_800FE50(data->field_4C);
+            data->playerSendBuffer[0] = ACTIVITY_DECLINE | IN_UNION_ROOM;
+            sub_800FE50(data->playerSendBuffer);
             data->state = 10;
-            sub_8013078(gStringVar4, gUnknown_02022C2C);
+            GetYouDeclinedTheOfferMessage(gStringVar4, gPlayerCurrActivity);
             break;
         }
         break;
@@ -2773,22 +2817,22 @@ void sub_80156E0(u8 taskId)
         data->state = 36;
         break;
     case 36:
-        if (gReceivedRemoteLinkPlayers == 0)
+        if (!gReceivedRemoteLinkPlayers)
         {
-            gUnknown_02022C2C = 0x40;
-            sub_8015664(0x25, gStringVar4);
-            memset(data->field_4C, 0, sizeof(data->field_4C));
-            data->field_9A[0] = 0;
-            data->field_98 = 0;
+            gPlayerCurrActivity = IN_UNION_ROOM;
+            ScheduleFieldMessageWithFollowupState(37, gStringVar4);
+            memset(data->playerSendBuffer, 0, sizeof(data->playerSendBuffer));
+            data->recvActivityRequest[0] = 0;
+            data->partnerYesNoResponse = 0;
         }
         break;
     case 37:
         data->state = 2;
-        sub_801818C(FALSE);
+        HandleCancelTrade(FALSE);
         break;
     case 13:
-        sub_8017E00(gStringVar4, gUnknown_02022C2C | 0x40);
-        sub_8015664(14, gStringVar4);
+        GetURoomActivityStartMsg(gStringVar4, gPlayerCurrActivity | IN_UNION_ROOM);
+        ScheduleFieldMessageWithFollowupState(14, gStringVar4);
         break;
     case 14:
         sub_800ADF8();
@@ -2804,7 +2848,7 @@ void sub_80156E0(u8 taskId)
         Free(data->field_C);
         Free(data->field_4);
         DestroyTask(data->field_20);
-        sub_8019F04(data->spriteIds);
+        DestroyGroupMemberObjects(data->spriteIds);
         data->state = 17;
         break;
     case 17:
@@ -2816,28 +2860,28 @@ void sub_80156E0(u8 taskId)
         {
             sub_8019E3C();
             DestroyTask(taskId);
-            Free(gUnknown_02022C30.uRoom);
-            sub_80149D8();
+            Free(sWirelessLinkMain.uRoom);
+            CreateTask_StartActivity();
         }
         break;
     case 42:
-        if (sub_800F7DC()->species == SPECIES_NONE)
+        if (GetHostRFUtgtGname()->species == SPECIES_NONE)
         {
             data->state = 43;
         }
         else
         {
-            if (sub_800F7DC()->species == SPECIES_EGG)
+            if (GetHostRFUtgtGname()->species == SPECIES_EGG)
             {
                 StringCopy(gStringVar4, sText_CancelRegistrationOfEgg);
             }
             else
             {
-                StringCopy(gStringVar1, gSpeciesNames[sub_800F7DC()->species]);
-                ConvertIntToDecimalStringN(gStringVar2, sub_800F7DC()->level, STR_CONV_MODE_LEFT_ALIGN, 3);
+                StringCopy(gStringVar1, gSpeciesNames[GetHostRFUtgtGname()->species]);
+                ConvertIntToDecimalStringN(gStringVar2, GetHostRFUtgtGname()->level, STR_CONV_MODE_LEFT_ALIGN, 3);
                 StringExpandPlaceholders(gStringVar4, sText_CancelRegistrationOfMon);
             }
-            sub_8015664(44, gStringVar4);
+            ScheduleFieldMessageWithFollowupState(44, gStringVar4);
         }
         break;
     case 43:
@@ -2845,23 +2889,23 @@ void sub_80156E0(u8 taskId)
             data->state = 47;
         break;
     case 47:
-        var5 = sub_8017178(&data->textState, &data->field_1D, &data->field_1E, &gUnknown_082F025C, &gUnknown_082F027C);
+        var5 = ListMenuHandler_AllItemsAvailable(&data->textState, &data->tradeBoardSelectWindowId, &data->tradeBoardDetailsWindowId, &gUnknown_082F025C, &gUnknown_082F027C);
         if (var5 != -1)
         {
             if (var5 == -2 || var5 == 3)
             {
                 data->state = 4;
-                sub_801818C(TRUE);
+                HandleCancelTrade(TRUE);
             }
             else
             {
                 switch (var5)
                 {
                 case 1: // REGISTER
-                    sub_8015664(53, sText_WhichMonWillYouOffer);
+                    ScheduleFieldMessageWithFollowupState(53, sText_WhichMonWillYouOffer);
                     break;
                 case 2: // INFO
-                    sub_8015664(47, sText_TradingBoardInfo);
+                    ScheduleFieldMessageWithFollowupState(47, sText_TradingBoardInfo);
                     break;
                 }
             }
@@ -2880,7 +2924,7 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 52:
-        var5 = sub_8017178(&data->textState, &data->field_1D, &data->field_1E, &gUnknown_082F0294, &sMenuTemplate_TradingBoardRequestType);
+        var5 = ListMenuHandler_AllItemsAvailable(&data->textState, &data->tradeBoardSelectWindowId, &data->tradeBoardDetailsWindowId, &gUnknown_082F0294, &sMenuTemplate_TradingBoardRequestType);
         if (var5 != -1)
         {
             switch (var5)
@@ -2889,7 +2933,7 @@ void sub_80156E0(u8 taskId)
             case 18:
                 ResetUnionRoomTrade(&sUnionRoomTrade);
                 sub_8010FCC(0, 0, 0);
-                sub_801568C(sText_RegistrationCanceled);
+                ScheduleFieldMessageAndExit(sText_RegistrationCanceled);
                 break;
             default:
                 sUnionRoomTrade.type = var5;
@@ -2900,17 +2944,17 @@ void sub_80156E0(u8 taskId)
         break;
     case 55:
         sub_8010FCC(sUnionRoomTrade.type, sUnionRoomTrade.playerSpecies, sUnionRoomTrade.playerLevel);
-        sub_801568C(sText_RegistraionCompleted);
+        ScheduleFieldMessageAndExit(sText_RegistraionCompleted);
         break;
     case 44:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             data->state = 56;
             break;
         case 1:
         case -1:
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
             break;
         }
@@ -2920,7 +2964,7 @@ void sub_80156E0(u8 taskId)
         {
             sub_8010FCC(0, 0, 0);
             ResetUnionRoomTrade(&sUnionRoomTrade);
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
         }
         break;
@@ -2929,38 +2973,38 @@ void sub_80156E0(u8 taskId)
             data->state = 46;
         break;
     case 46:
-        sub_80173B0();
+        UR_ClearBg0();
         data->state = 48;
         break;
     case 48:
-        var5 = sub_80172A0(&data->textState, &data->field_1D, &data->field_4A, &data->field_1E, &gUnknown_082F034C, &gUnknown_082F03A4, data->field_0);
+        var5 = TradeBoardMenuHandler(&data->textState, &data->tradeBoardSelectWindowId, &data->field_4A, &data->tradeBoardDetailsWindowId, &gUnknown_082F034C, &sTradeBoardListMenuTemplate, data->field_0);
         if (var5 != -1)
         {
             switch (var5)
             {
             case -2:
             case 8:
-                sub_801818C(TRUE);
+                HandleCancelTrade(TRUE);
                 data->state = 4;
                 break;
             default:
-                sub_80173B0();
-                switch (sub_8017D04(data->field_0->arr[var5].unk.field_0.type, data->field_0->arr[var5].unk.field_0.species))
+                UR_ClearBg0();
+                switch (IsRequestedTypeOrEggInPlayerParty(data->field_0->arr[var5].gname_uname.gname.type, data->field_0->arr[var5].gname_uname.gname.species))
                 {
-                case 0:
-                    sub_8018404(gStringVar1, &data->field_0->arr[var5]);
-                    sub_8015664(49, sText_AskTrainerToMakeTrade);
+                case UR_TRADE_MATCH:
+                    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[var5]);
+                    ScheduleFieldMessageWithFollowupState(49, sText_AskTrainerToMakeTrade);
                     taskData[1] = var5;
                     break;
-                case 1:
-                    sub_8018404(gStringVar1, &data->field_0->arr[var5]);
-                    StringCopy(gStringVar2, gTypeNames[data->field_0->arr[var5].unk.field_0.type]);
-                    sub_8015664(46, sText_DontHaveTypeTrainerWants);
+                case UR_TRADE_NOTYPE:
+                    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[var5]);
+                    StringCopy(gStringVar2, gTypeNames[data->field_0->arr[var5].gname_uname.gname.type]);
+                    ScheduleFieldMessageWithFollowupState(46, sText_DontHaveTypeTrainerWants);
                     break;
-                case 2:
-                    sub_8018404(gStringVar1, &data->field_0->arr[var5]);
-                    StringCopy(gStringVar2, gTypeNames[data->field_0->arr[var5].unk.field_0.type]);
-                    sub_8015664(46, sText_DontHaveEggTrainerWants);
+                case UR_TRADE_NOEGG:
+                    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[var5]);
+                    StringCopy(gStringVar2, gTypeNames[data->field_0->arr[var5].gname_uname.gname.type]);
+                    ScheduleFieldMessageWithFollowupState(46, sText_DontHaveEggTrainerWants);
                     break;
                 }
                 break;
@@ -2968,14 +3012,14 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 49:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             data->state = 50;
             break;
         case -1:
         case 1:
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
             break;
         }
@@ -2984,9 +3028,9 @@ void sub_80156E0(u8 taskId)
         if (PrintOnTextbox(&data->textState, sText_WhichMonWillYouOffer))
         {
             sUnionRoomTrade.field_0 = 2;
-            memcpy(&gUnknown_02022C38, &data->field_0->arr[taskData[1]].unk.field_0.unk_00, sizeof(gUnknown_02022C38));
-            gUnionRoomRequestedMonType = data->field_0->arr[taskData[1]].unk.field_0.type;
-            gUnionRoomOfferedSpecies = data->field_0->arr[taskData[1]].unk.field_0.species;
+            memcpy(&gPartnerTgtGnameSub, &data->field_0->arr[taskData[1]].gname_uname.gname.unk_00, sizeof(gPartnerTgtGnameSub));
+            gUnionRoomRequestedMonType = data->field_0->arr[taskData[1]].gname_uname.gname.type;
+            gUnionRoomOfferedSpecies = data->field_0->arr[taskData[1]].gname_uname.gname.species;
             gFieldCallback = FieldCB_ContinueScriptUnionRoom;
             ChooseMonForTradingBoard(PARTY_MENU_TYPE_UNION_ROOM_TRADE, CB2_ReturnToField);
             sub_80156B0(data);
@@ -2994,17 +3038,17 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 51:
-        gUnknown_02022C2C = 0x44;
-        sub_8012188(data->field_0->arr[taskData[1]].unk.playerName, &data->field_0->arr[taskData[1]].unk.field_0, 0x44);
-        sub_8018404(gStringVar1, &data->field_0->arr[taskData[1]]);
-        sub_8017020(sCommunicatingWaitTexts[2]);
+        gPlayerCurrActivity = ACTIVITY_TRADE | IN_UNION_ROOM;
+        sub_8012188(data->field_0->arr[taskData[1]].gname_uname.playerName, &data->field_0->arr[taskData[1]].gname_uname.gname, 0x44);
+        IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[taskData[1]]);
+        UR_PrintFieldMessage(sCommunicatingWaitTexts[2]);
         data->state = 25;
         break;
     case 26:
         if (PrintOnTextbox(&data->textState, gStringVar4))
         {
-            sub_801818C(TRUE);
-            sub_801A3D0(taskData[0], taskData[1], data->field_0);
+            HandleCancelTrade(TRUE);
+            UpdateUnionGroupMemberFacing(taskData[0], taskData[1], data->field_0);
             data->state = 4;
         }
         break;
@@ -3021,37 +3065,37 @@ void var_800D_set_xB(void)
         gSpecialVar_Result = 11;
 }
 
-void sub_801689C(struct UnkStruct_URoom *arg0)
+static void ReceiveUnionRoomActivityPacket(struct WirelessLink_URoom *data)
 {
     if (gRecvCmds[1][1] != 0 && (gRecvCmds[1][0] & 0xFF00) == 0x2F00)
     {
-        arg0->field_9A[0] = gRecvCmds[1][1];
-        if (gRecvCmds[1][1] == 0x44)
+        data->recvActivityRequest[0] = gRecvCmds[1][1];
+        if (gRecvCmds[1][1] == (ACTIVITY_TRADE | IN_UNION_ROOM))
         {
-            arg0->field_9A[1] = gRecvCmds[1][2];
-            arg0->field_9A[2] = gRecvCmds[1][3];
+            data->recvActivityRequest[1] = gRecvCmds[1][2];
+            data->recvActivityRequest[2] = gRecvCmds[1][3];
         }
     }
 }
 
-bool32 sub_80168DC(struct UnkStruct_URoom *arg0)
+static bool32 UnionRoom_HandleContactFromOtherPlayer(struct WirelessLink_URoom *data)
 {
-    if (arg0->field_9A[0] != 0)
+    if (data->recvActivityRequest[0] != 0)
     {
-        s32 var = sub_8017EA0(gStringVar4, gLinkPlayers[1].gender, &arg0->field_9A[0], arg0);
+        s32 var = GetChatLeaderActionRequestMessage(gStringVar4, gLinkPlayers[1].gender, &data->recvActivityRequest[0], data);
         if (var == 0)
         {
             return TRUE;
         }
         else if (var == 1)
         {
-            arg0->state = 35;
-            gUnknown_02022C2C = arg0->field_9A[0];
+            data->state = 35;
+            gPlayerCurrActivity = data->recvActivityRequest[0];
             return FALSE;
         }
         else if (var == 2)
         {
-            arg0->state = 36;
+            data->state = 36;
             sub_800AC34();
             return FALSE;
         }
@@ -3062,53 +3106,53 @@ bool32 sub_80168DC(struct UnkStruct_URoom *arg0)
 
 void InitUnionRoom(void)
 {
-    struct UnkStruct_URoom *ptr;
+    struct WirelessLink_URoom *data;
 
     sUnionRoomPlayerName[0] = EOS;
-    CreateTask(sub_801697C, 0);
-    gUnknown_02022C30.uRoom = gUnknown_02022C30.uRoom; // Needed to match.
-    gUnknown_02022C30.uRoom = ptr = AllocZeroed(sizeof(struct UnkStruct_URoom));
-    gUnknown_03000DA8 = gUnknown_02022C30.uRoom;
-    ptr->state = 0;
-    ptr->textState = 0;
-    ptr->field_10 = 0;
-    ptr->field_12 = 0;
+    CreateTask(Task_InitUnionRoom, 0);
+    sWirelessLinkMain.uRoom = sWirelessLinkMain.uRoom; // Needed to match.
+    sWirelessLinkMain.uRoom = data = AllocZeroed(sizeof(struct WirelessLink_URoom));
+    sURoom = sWirelessLinkMain.uRoom;
+    data->state = 0;
+    data->textState = 0;
+    data->field_10 = 0;
+    data->field_12 = 0;
     sUnionRoomPlayerName[0] = EOS;
 }
 
-void sub_801697C(u8 taskId)
+static void Task_InitUnionRoom(u8 taskId)
 {
     s32 i;
     u8 text[32];
-    struct UnkStruct_URoom *structPtr = gUnknown_02022C30.uRoom;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
 
-    switch (structPtr->state)
+    switch (data->state)
     {
     case 0:
-        structPtr->state = 1;
+        data->state = 1;
         break;
     case 1:
-        sub_8010F84(0xC, 0, 0);
-        sub_800B488();
+        SetHostRFUtgtGname(ACTIVITY_SEARCH, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C84();
-        sub_80111B0(1);
-        structPtr->state = 2;
+        InitializeRfuLinkManager_EnterUnionRoom();
+        sub_80111B0(TRUE);
+        data->state = 2;
         break;
     case 2:
-        structPtr->field_4 = AllocZeroed(0x70);
-        sub_80175EC(structPtr->field_4, 4);
-        structPtr->field_C = AllocZeroed(0x70);
-        sub_80175EC(structPtr->field_C, 4);
-        structPtr->field_0 = AllocZeroed(0x100);
-        sub_8017580(structPtr->field_0->arr, 8);
-        structPtr->field_8 = AllocZeroed(0x20);
-        sub_8017580(&structPtr->field_8->arr[0], 1);
-        structPtr->field_20 = sub_8016DF0(structPtr->field_C, structPtr->field_4, 10);
-        structPtr->state = 3;
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        data->field_C = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        ClearUnkStruct_x1CArray(data->field_C, 4);
+        data->field_0 = AllocZeroed(8 * sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x20Array(data->field_0->arr, 8);
+        data->field_8 = AllocZeroed(sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x20Array(&data->field_8->arr[0], 1);
+        data->field_20 = CreateTask_SearchForChildOrParent(data->field_C, data->field_4, 10);
+        data->state = 3;
         break;
     case 3:
-        switch (sub_8016B00())
+        switch (HandlePlayerListUpdate())
         {
         case 1:
         case 2:
@@ -3116,10 +3160,10 @@ void sub_801697C(u8 taskId)
             {
                 for (i = 0; i < PLAYER_NAME_LENGTH + 1; i++)
                 {
-                    if (structPtr->field_0->arr[i].field_1A_0 == 1)
+                    if (data->field_0->arr[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
                     {
-                        sub_8018404(text, &structPtr->field_0->arr[i]);
-                        if (sub_800E540(ReadAsU16(structPtr->field_0->arr[i].unk.field_0.unk_00.playerTrainerId), text))
+                        IntlConvPartnerUname7(text, &data->field_0->arr[i]);
+                        if (PlayerHasMetTrainerBefore(ReadAsU16(data->field_0->arr[i].gname_uname.gname.unk_00.playerTrainerId), text))
                         {
                             StringCopy(sUnionRoomPlayerName, text);
                             break;
@@ -3133,13 +3177,13 @@ void sub_801697C(u8 taskId)
         }
         break;
     case 4:
-        free(structPtr->field_8);
-        free(structPtr->field_0);
-        free(structPtr->field_C);
-        free(structPtr->field_4);
-        DestroyTask(structPtr->field_20);
-        free(gUnknown_02022C30.uRoom);
-        sub_800EDD4();
+        free(data->field_8);
+        free(data->field_0);
+        free(data->field_C);
+        free(data->field_4);
+        DestroyTask(data->field_20);
+        free(sWirelessLinkMain.uRoom);
+        LinkRfu_Shutdown();
         DestroyTask(taskId);
         break;
     }
@@ -3159,158 +3203,158 @@ bool16 BufferUnionRoomPlayerName(void)
     }
 }
 
-u8 sub_8016B00(void)
+static u8 HandlePlayerListUpdate(void)
 {
     s32 i;
     u8 j;
-    struct UnkStruct_URoom *structPtr = gUnknown_02022C30.uRoom;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
     s32 r7 = 0;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (sub_8017630(&structPtr->field_C->arr[i].unk0, &gUnknown_082F045C) == TRUE)
+        if (AreGnameUnameDifferent(&data->field_C->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy) == TRUE)
         {
-            structPtr->field_8->arr[0].unk = structPtr->field_C->arr[i].unk0;
-            structPtr->field_8->arr[0].field_18 = 0;
-            structPtr->field_8->arr[0].field_1A_0 = 1;
-            structPtr->field_8->arr[0].field_1B = 1;
+            data->field_8->arr[0].gname_uname = data->field_C->arr[i].gname_uname;
+            data->field_8->arr[0].field_18 = 0;
+            data->field_8->arr[0].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
+            data->field_8->arr[0].field_1B = 1;
             return 4;
         }
     }
     for (j = 0; j < 8; j++)
     {
-        if (structPtr->field_0->arr[j].field_1A_0 != 0)
+        if (data->field_0->arr[j].groupScheduledAnim != UNION_ROOM_SPAWN_NONE)
         {
-            i = sub_80176E4(&structPtr->field_0->arr[j], &structPtr->field_4->arr[0]);
+            i = Findx20Inx1CArray(&data->field_0->arr[j], &data->field_4->arr[0]);
             if (i != 0xFF)
             {
-                if (structPtr->field_0->arr[j].field_1A_0 == 1)
+                if (data->field_0->arr[j].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
                 {
-                    if (sub_8017678(&structPtr->field_0->arr[j].unk, &structPtr->field_4->arr[i].unk0))
+                    if (AreUnionRoomPlayerGnamesDifferent(&data->field_0->arr[j].gname_uname, &data->field_4->arr[i].gname_uname))
                     {
-                        structPtr->field_0->arr[j].unk = structPtr->field_4->arr[i].unk0;
-                        structPtr->field_0->arr[j].field_1B = 0x40;
+                        data->field_0->arr[j].gname_uname = data->field_4->arr[i].gname_uname;
+                        data->field_0->arr[j].field_1B = 0x40;
                         r7 = 1;
                     }
-                    else if (structPtr->field_0->arr[j].field_1B != 0)
+                    else if (data->field_0->arr[j].field_1B != 0)
                     {
-                        structPtr->field_0->arr[j].field_1B--;
-                        if (structPtr->field_0->arr[j].field_1B == 0)
+                        data->field_0->arr[j].field_1B--;
+                        if (data->field_0->arr[j].field_1B == 0)
                             r7 = 2;
                     }
                 }
                 else
                 {
-                    structPtr->field_0->arr[j].field_1A_0 = 1;
-                    structPtr->field_0->arr[j].field_1B = 0;
+                    data->field_0->arr[j].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
+                    data->field_0->arr[j].field_1B = 0;
                     r7 = 2;
                 }
-                structPtr->field_0->arr[j].field_18 = 0;
+                data->field_0->arr[j].field_18 = 0;
             }
-            else if (structPtr->field_0->arr[j].field_1A_0 != 2)
+            else if (data->field_0->arr[j].groupScheduledAnim != UNION_ROOM_SPAWN_OUT)
             {
-                structPtr->field_0->arr[j].field_18++;
-                if (structPtr->field_0->arr[j].field_18 >= 600)
+                data->field_0->arr[j].field_18++;
+                if (data->field_0->arr[j].field_18 >= 600)
                 {
-                    structPtr->field_0->arr[j].field_1A_0 = 2;
+                    data->field_0->arr[j].groupScheduledAnim = UNION_ROOM_SPAWN_OUT;
                     r7 = 2;
                 }
             }
-            else if (structPtr->field_0->arr[j].field_1A_0 == 2)
+            else if (data->field_0->arr[j].groupScheduledAnim == UNION_ROOM_SPAWN_OUT)
             {
-                structPtr->field_0->arr[j].field_18++;
-                if (structPtr->field_0->arr[j].field_18 >= 900)
+                data->field_0->arr[j].field_18++;
+                if (data->field_0->arr[j].field_18 >= 900)
                 {
-                    sub_8017580(&structPtr->field_0->arr[j], 1);
+                    ClearUnkStruct_x20Array(&data->field_0->arr[j], 1);
                 }
             }
         }
     }
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (sub_8017734(&structPtr->field_0->arr[0], &structPtr->field_4->arr[i], 8) != 0xFF)
+        if (Appendx1Ctox20(&data->field_0->arr[0], &data->field_4->arr[i], 8) != 0xFF)
             r7 = 1;
     }
 
     return r7;
 }
 
-void sub_8016CA0(u8 taskId)
+static void Task_SearchForChildOrParent(u8 taskId)
 {
     s32 i, j;
-    struct UnkStruct_Shared sp0;
+    struct WirelessGnameUnamePair gname_uname;
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
-    bool8 r4;
+    bool8 isParent;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        r4 = sub_800DE7C(&sp0.field_0, sp0.playerName, i);
-        if (!sub_8013D88(sp0.field_0.activity, gTasks[taskId].data[4]))
+        isParent = LinkRfu_GetNameIfCompatible(&gname_uname.gname, gname_uname.playerName, i);
+        if (!IsPartnerActivityAcceptable(gname_uname.gname.activity, gTasks[taskId].data[4]))
         {
-            sp0 = gUnknown_082F045C;
+            gname_uname = sWirelessGnameUnamePair_Dummy;
         }
-        if (sp0.field_0.unk_00.language == 1)
+        if (gname_uname.gname.unk_00.language == LANGUAGE_JAPANESE)
         {
-            sp0 = gUnknown_082F045C;
+            gname_uname = sWirelessGnameUnamePair_Dummy;
         }
-        if (!r4)
+        if (!isParent)
         {
             for (j = 0; j < i; j++)
             {
-                if (!sub_8017630(&ptr[1]->arr[j].unk0, &sp0))
+                if (!AreGnameUnameDifferent(&ptr[1]->arr[j].gname_uname, &gname_uname))
                 {
-                    sp0 = gUnknown_082F045C;
+                    gname_uname = sWirelessGnameUnamePair_Dummy;
                 }
             }
-            ptr[1]->arr[i].unk0 = sp0;
-            ptr[1]->arr[i].unk18 = sub_8017630(&ptr[1]->arr[i].unk0, &gUnknown_082F045C);
+            ptr[1]->arr[i].gname_uname = gname_uname;
+            ptr[1]->arr[i].active = AreGnameUnameDifferent(&ptr[1]->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy);
         }
         else
         {
-            ptr[0]->arr[i].unk0 = sp0;
-            ptr[0]->arr[i].unk18 = sub_8017630(&ptr[0]->arr[i].unk0, &gUnknown_082F045C);
+            ptr[0]->arr[i].gname_uname = gname_uname;
+            ptr[0]->arr[i].active = AreGnameUnameDifferent(&ptr[0]->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy);
         }
     }
 }
 
-u8 sub_8016DF0(struct UnkStruct_Main4 * a0, struct UnkStruct_Main4 * a1, u32 a2)
+static u8 CreateTask_SearchForChildOrParent(struct UnkStruct_Main4 * main4_parent, struct UnkStruct_Main4 * main4_child, u32 linkGroup)
 {
-    u8 taskId = CreateTask(sub_8016CA0, 0);
+    u8 taskId = CreateTask(Task_SearchForChildOrParent, 0);
     struct UnkStruct_Main4 ** data = (void *)gTasks[taskId].data;
-    data[0] = a0;
-    data[1] = a1;
-    gTasks[taskId].data[4] = a2;
+    data[0] = main4_parent;
+    data[1] = main4_child;
+    gTasks[taskId].data[4] = linkGroup;
     return taskId;
 }
 
-void sub_8016E24(u8 taskId)
+static void Task_ListenForPartnersWithCompatibleSerialNos(u8 taskId)
 {
     s32 i, j;
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        sub_800DE7C(&ptr[0]->arr[i].unk0.field_0, ptr[0]->arr[i].unk0.playerName, i);
-        if (!sub_8013D88(ptr[0]->arr[i].unk0.field_0.activity, gTasks[taskId].data[2]))
+        LinkRfu_GetNameIfCompatible(&ptr[0]->arr[i].gname_uname.gname, ptr[0]->arr[i].gname_uname.playerName, i);
+        if (!IsPartnerActivityAcceptable(ptr[0]->arr[i].gname_uname.gname.activity, gTasks[taskId].data[2]))
         {
-            ptr[0]->arr[i].unk0 = gUnknown_082F045C;
+            ptr[0]->arr[i].gname_uname = sWirelessGnameUnamePair_Dummy;
         }
         for (j = 0; j < i; j++)
         {
-            if (!sub_8017630(&ptr[0]->arr[j].unk0, &ptr[0]->arr[i].unk0))
+            if (!AreGnameUnameDifferent(&ptr[0]->arr[j].gname_uname, &ptr[0]->arr[i].gname_uname))
             {
-                ptr[0]->arr[i].unk0 = gUnknown_082F045C;
+                ptr[0]->arr[i].gname_uname = sWirelessGnameUnamePair_Dummy;
             }
         }
-        ptr[0]->arr[i].unk18 = sub_8017630(&ptr[0]->arr[i].unk0, &gUnknown_082F045C);
+        ptr[0]->arr[i].active = AreGnameUnameDifferent(&ptr[0]->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy);
     }
 }
 
-bool32 sub_8016F1C(struct GFtgtGname *arg0, s16 arg1)
+static bool32 GetGnameWonderFlagByLinkGroup(struct GFtgtGname *gname, s16 linkGroup)
 {
-    if (arg1 == 7)
+    if (linkGroup == LINK_GROUP_WONDER_CARD)
     {
-        if (!arg0->unk_00.hasCard)
+        if (!gname->unk_00.hasCard)
         {
             return FALSE;
         }
@@ -3319,9 +3363,9 @@ bool32 sub_8016F1C(struct GFtgtGname *arg0, s16 arg1)
             return TRUE;
         }
     }
-    else if (arg1 == 8)
+    else if (linkGroup == LINK_GROUP_WONDER_NEWS)
     {
-        if (!arg0->unk_00.hasNews)
+        if (!gname->unk_00.hasNews)
         {
             return FALSE;
         }
@@ -3336,40 +3380,40 @@ bool32 sub_8016F1C(struct GFtgtGname *arg0, s16 arg1)
     }
 }
 
-void sub_8016F44(u8 taskId)
+static void Task_ListenForPartnersWithSerial7F7D(u8 taskId)
 {
     s32 i;
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (sub_800DF34(&ptr[0]->arr[i].unk0.field_0, ptr[0]->arr[i].unk0.playerName, i))
+        if (LinkRfu_GetNameIfSerial7F7D(&ptr[0]->arr[i].gname_uname.gname, ptr[0]->arr[i].gname_uname.playerName, i))
         {
-            sub_8016F1C(&ptr[0]->arr[i].unk0.field_0, gTasks[taskId].data[2]);
+            GetGnameWonderFlagByLinkGroup(&ptr[0]->arr[i].gname_uname.gname, gTasks[taskId].data[2]);
         }
-        ptr[0]->arr[i].unk18 = sub_8017630(&ptr[0]->arr[i].unk0, &gUnknown_082F045C);
+        ptr[0]->arr[i].active = AreGnameUnameDifferent(&ptr[0]->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy);
     }
 }
 
-u8 sub_8016FC0(struct UnkStruct_Main4 * a0, u32 a1)
+static u8 CreateTask_ListenForPartnersWithCompatibleSerialNos(struct UnkStruct_Main4 * main4, u32 linkGroup)
 {
-    u8 taskId = CreateTask(sub_8016E24, 0);
+    u8 taskId = CreateTask(Task_ListenForPartnersWithCompatibleSerialNos, 0);
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
-    ptr[0] = a0;
-    gTasks[taskId].data[2] = a1;
+    ptr[0] = main4;
+    gTasks[taskId].data[2] = linkGroup;
     return taskId;
 }
 
-u8 sub_8016FF0(struct UnkStruct_Main4 * a0, u32 a1)
+static u8 CreateTask_ListenForPartnersWithSerial7F7D(struct UnkStruct_Main4 * main4, u32 linkGroup)
 {
-    u8 taskId = CreateTask(sub_8016F44, 0);
+    u8 taskId = CreateTask(Task_ListenForPartnersWithSerial7F7D, 0);
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
-    ptr[0] = a0;
-    gTasks[taskId].data[2] = a1;
+    ptr[0] = main4;
+    gTasks[taskId].data[2] = linkGroup;
     return taskId;
 }
 
-bool32 sub_8017020(const u8 *src)
+static bool32 UR_PrintFieldMessage(const u8 *src)
 {
     LoadMessageBoxAndBorderGfx();
     DrawDialogueFrame(0, 1);
@@ -3378,19 +3422,15 @@ bool32 sub_8017020(const u8 *src)
     return FALSE;
 }
 
-bool32 sub_801704C(void)
+static bool32 UR_RunTextPrinters_CheckPrinter0Active(void)
 {
     if (!RunTextPrintersAndIsPrinter0Active())
-    {
         return TRUE;
-    }
     else
-    {
         return FALSE;
-    }
 }
 
-bool8 PrintOnTextbox(u8 *textState, const u8 *str)
+static bool8 PrintOnTextbox(u8 *textState, const u8 *str)
 {
     switch (*textState)
     {
@@ -3412,31 +3452,31 @@ bool8 PrintOnTextbox(u8 *textState, const u8 *str)
     return FALSE;
 }
 
-s8 sub_80170B8(u8 *arg0, bool32 arg1)
+static s8 UnionRoomHandleYesNo(u8 *state, bool32 noDraw)
 {
     s8 r1;
 
-    switch (*arg0)
+    switch (*state)
     {
     case 0:
-        if (arg1)
+        if (noDraw)
         {
             return -3;
         }
         DisplayYesNoMenuDefaultYes();
-        (*arg0)++;
+        (*state)++;
         break;
     case 1:
-        if (arg1)
+        if (noDraw)
         {
             sub_8198C78();
-            *arg0 = 0;
+            *state = 0;
             return -3;
         }
         r1 = Menu_ProcessInputNoWrapClearOnChoose();
         if (r1 == -1 || r1 == 0 || r1 == 1)
         {
-            *arg0 = 0;
+            *state = 0;
             return r1;
         }
         break;
@@ -3444,64 +3484,64 @@ s8 sub_80170B8(u8 *arg0, bool32 arg1)
     return -2;
 }
 
-u8 sub_8017118(const struct WindowTemplate * template)
+static u8 CreateTradeBoardWindow(const struct WindowTemplate * template)
 {
     u8 windowId = AddWindow(template);
     DrawStdWindowFrame(windowId, FALSE);
-    FillWindowPixelBuffer(windowId, 0xFF);
-    sub_80173E0(windowId, 1, sText_NameWantedOfferLv, 8, 1, 6);
+    FillWindowPixelBuffer(windowId, PIXEL_FILL(15));
+    UR_AddTextPrinterParameterized(windowId, 1, sText_NameWantedOfferLv, 8, 1, 6);
     CopyWindowToVram(windowId, 2);
     PutWindowTilemap(windowId);
     return windowId;
 }
 
-void sub_8017168(u8 windowId)
+static void DeleteTradeBoardWindow(u8 windowId)
 {
     RemoveWindow(windowId);
 }
 
-s32 sub_8017178(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate)
+static s32 ListMenuHandler_AllItemsAvailable(u8 *state, u8 *windowId, u8 *listMenuId, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate)
 {
-    s32 r1, r8;
+    s32 maxWidth, input;
     struct WindowTemplate winTemplateCopy;
 
-    switch (*arg0)
+    switch (*state)
     {
     case 0:
         winTemplateCopy = *winTemplate;
-        r1 = Intl_GetListMenuWidth(menuTemplate);
-        if (winTemplateCopy.width > r1)
+        maxWidth = Intl_GetListMenuWidth(menuTemplate);
+        if (winTemplateCopy.width > maxWidth)
         {
-            winTemplateCopy.width = r1;
+            winTemplateCopy.width = maxWidth;
         }
         if (winTemplateCopy.tilemapLeft + winTemplateCopy.width > 29)
         {
             winTemplateCopy.tilemapLeft = max(29 - winTemplateCopy.width, 0);
         }
-        *arg1 = AddWindow(&winTemplateCopy);
-        DrawStdWindowFrame(*arg1, FALSE);
+        *windowId = AddWindow(&winTemplateCopy);
+        DrawStdWindowFrame(*windowId, FALSE);
         gMultiuseListMenuTemplate = *menuTemplate;
-        gMultiuseListMenuTemplate.windowId = *arg1;
-        *arg2 = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
-        CopyWindowToVram(*arg1, TRUE);
-        (*arg0)++;
+        gMultiuseListMenuTemplate.windowId = *windowId;
+        *listMenuId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
+        CopyWindowToVram(*windowId, TRUE);
+        (*state)++;
         break;
     case 1:
-        r8 = ListMenu_ProcessInput(*arg2);
+        input = ListMenu_ProcessInput(*listMenuId);
         if (({gMain.newKeys & A_BUTTON;}))
         {
-            DestroyListMenuTask(*arg2, NULL, NULL);
-            ClearStdWindowAndFrame(*arg1, TRUE);
-            RemoveWindow(*arg1);
-            *arg0 = 0;
-            return r8;
+            DestroyListMenuTask(*listMenuId, NULL, NULL);
+            ClearStdWindowAndFrame(*windowId, TRUE);
+            RemoveWindow(*windowId);
+            *state = 0;
+            return input;
         }
         else if (({gMain.newKeys & B_BUTTON;}))
         {
-            DestroyListMenuTask(*arg2, NULL, NULL);
-            ClearStdWindowAndFrame(*arg1, TRUE);
-            RemoveWindow(*arg1);
-            *arg0 = 0;
+            DestroyListMenuTask(*listMenuId, NULL, NULL);
+            ClearStdWindowAndFrame(*windowId, TRUE);
+            RemoveWindow(*windowId);
+            *state = 0;
             return -2;
         }
         break;
@@ -3510,49 +3550,49 @@ s32 sub_8017178(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTe
     return -1;
 }
 
-s32 sub_80172A0(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *arg6)
+static s32 TradeBoardMenuHandler(u8 *state, u8 *windowId, u8 *listMenuId, u8 *tradeBoardWindowId, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *traders)
 {
     s32 input;
-    s32 r4;
+    s32 idx;
 
-    switch (*arg0)
+    switch (*state)
     {
     case 0:
-        *arg3 = sub_8017118(&gUnknown_082F0344);
-        *arg1 = AddWindow(winTemplate);
-        DrawStdWindowFrame(*arg1, FALSE);
+        *tradeBoardWindowId = CreateTradeBoardWindow(&gUnknown_082F0344);
+        *windowId = AddWindow(winTemplate);
+        DrawStdWindowFrame(*windowId, FALSE);
         gMultiuseListMenuTemplate = *menuTemplate;
-        gMultiuseListMenuTemplate.windowId = *arg1;
-        *arg2 = ListMenuInit(&gMultiuseListMenuTemplate, 0, 1);
-        (*arg0)++;
+        gMultiuseListMenuTemplate.windowId = *windowId;
+        *listMenuId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 1);
+        (*state)++;
         break;
     case 1:
-        CopyWindowToVram(*arg1, TRUE);
-        (*arg0)++;
+        CopyWindowToVram(*windowId, TRUE);
+        (*state)++;
         break;
     case 2:
         // Register swap r1 <---> r2
-        input = ListMenu_ProcessInput(*arg2);
+        input = ListMenu_ProcessInput(*listMenuId);
         if (({gMain.newKeys & (A_BUTTON | B_BUTTON);}))
         {
             if (input == 8 || ({gMain.newKeys & B_BUTTON;}))
             {
-                DestroyListMenuTask(*arg2, NULL, NULL);
-                RemoveWindow(*arg1);
-                sub_8017168(*arg3);
-                *arg0 = 0;
+                DestroyListMenuTask(*listMenuId, NULL, NULL);
+                RemoveWindow(*windowId);
+                DeleteTradeBoardWindow(*tradeBoardWindowId);
+                *state = 0;
                 return -2;
             }
             else
             {
-                r4 = sub_8017CB0(arg6->arr, input);
-                if (r4 >= 0)
+                idx = GetIndexOfNthTradeBoardOffer(traders->arr, input);
+                if (idx >= 0)
                 {
-                    DestroyListMenuTask(*arg2, NULL, NULL);
-                    RemoveWindow(*arg1);
-                    sub_8017168(*arg3);
-                    *arg0 = 0;
-                    return r4;
+                    DestroyListMenuTask(*listMenuId, NULL, NULL);
+                    RemoveWindow(*windowId);
+                    DeleteTradeBoardWindow(*tradeBoardWindowId);
+                    *state = 0;
+                    return idx;
                 }
                 else
                 {
@@ -3565,127 +3605,128 @@ s32 sub_80172A0(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTempl
 
     return -1;
 }
-void sub_80173B0(void)
+
+static void UR_ClearBg0(void)
 {
     FillBgTilemapBufferRect(0, 0, 0, 0, 32, 32, 0);
     CopyBgTilemapBufferToVram(0);
 }
 
-void sub_80173D4(void)
+static void JoinGroup_EnableScriptContexts(void)
 {
     EnableBothScriptContexts();
 }
 
-void sub_80173E0(u8 windowId, u8 arg1, const u8 *str, u8 arg3, u8 arg4, u8 arg5)
+static void UR_AddTextPrinterParameterized(u8 windowId, u8 fontId, const u8 *str, u8 x, u8 y, u8 colorIdx)
 {
-    struct TextPrinterTemplate sp0;
+    struct TextPrinterTemplate printerTemplate;
 
-    sp0.currentChar = str;
-    sp0.windowId = windowId;
-    sp0.fontId = arg1;
-    sp0.x = arg3;
-    sp0.y = arg4;
-    sp0.currentX = arg3;
-    sp0.currentY = arg4;
-    sp0.unk = 0;
+    printerTemplate.currentChar = str;
+    printerTemplate.windowId = windowId;
+    printerTemplate.fontId = fontId;
+    printerTemplate.x = x;
+    printerTemplate.y = y;
+    printerTemplate.currentX = x;
+    printerTemplate.currentY = y;
+    printerTemplate.unk = 0;
 
     gTextFlags.useAlternateDownArrow = FALSE;
-    switch (arg5)
+    switch (colorIdx)
     {
-    case 0:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 2;
-        sp0.bgColor = 1;
-        sp0.shadowColor = 3;
-        break;
-    case 1:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 4;
-        sp0.bgColor = 1;
-        sp0.shadowColor = 5;
-        break;
-    case 2:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 6;
-        sp0.bgColor = 1;
-        sp0.shadowColor = 7;
-        break;
-    case 3:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 1;
-        sp0.bgColor = 1;
-        sp0.shadowColor = 3;
-        break;
-    case 4:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 1;
-        sp0.bgColor = 2;
-        sp0.shadowColor = 3;
-        break;
-    case 5:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 7;
-        sp0.bgColor = 15;
-        sp0.shadowColor = 9;
-        break;
-    case 6:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 14;
-        sp0.bgColor = 15;
-        sp0.shadowColor = 9;
+    case UR_COLOR_DKE_WHT_LTE:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_DARK_GREY;
+        printerTemplate.bgColor = TEXT_COLOR_WHITE;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_GREY;
+        break;
+    case UR_COLOR_RED_WHT_LTR:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_RED;
+        printerTemplate.bgColor = TEXT_COLOR_WHITE;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_RED;
+        break;
+    case UR_COLOR_GRN_WHT_LTG:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_GREEN;
+        printerTemplate.bgColor = TEXT_COLOR_WHITE;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_GREEN;
+        break;
+    case UR_COLOR_WHT_WHT_LTE:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_WHITE;
+        printerTemplate.bgColor = TEXT_COLOR_WHITE;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_GREY;
+        break;
+    case UR_COLOR_WHT_DKE_LTE:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_WHITE;
+        printerTemplate.bgColor = TEXT_COLOR_DARK_GREY;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_GREY;
+        break;
+    case UR_COLOR_GRN_DN6_LTB:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_LIGHT_GREEN;
+        printerTemplate.bgColor = TEXT_DYNAMIC_COLOR_6;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_BLUE;
+        break;
+    case UR_COLOR_DN5_DN6_LTB:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_DYNAMIC_COLOR_5;
+        printerTemplate.bgColor = TEXT_DYNAMIC_COLOR_6;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_BLUE;
         break;
     }
 
-    AddTextPrinter(&sp0, 0xFF, NULL);
+    AddTextPrinter(&printerTemplate, 0xFF, NULL);
 }
 
-void sub_8017580(struct UnkStruct_x20 *arg0, u8 count)
+static void ClearUnkStruct_x20Array(struct UnkStruct_x20 *arr, u8 count)
 {
     s32 i;
 
     for (i = 0; i < count; i++)
     {
-        arg0[i].unk = gUnknown_082F045C;
-        arg0[i].field_18 = 0xFF;
-        arg0[i].field_1A_0 = 0;
-        arg0[i].field_1A_1 = 0;
-        arg0[i].field_1B = 0;
+        arr[i].gname_uname = sWirelessGnameUnamePair_Dummy;
+        arr[i].field_18 = 0xFF;
+        arr[i].groupScheduledAnim = UNION_ROOM_SPAWN_NONE;
+        arr[i].field_1A_1 = 0;
+        arr[i].field_1B = 0;
     }
 }
 
-void sub_80175EC(struct UnkStruct_Main4 *arg0, u8 count)
+static void ClearUnkStruct_x1CArray(struct UnkStruct_Main4 *main4, u8 count)
 {
     s32 i;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        arg0->arr[i].unk0 = gUnknown_082F045C;
-        arg0->arr[i].unk18 = 0;
+        main4->arr[i].gname_uname = sWirelessGnameUnamePair_Dummy;
+        main4->arr[i].active = FALSE;
     }
 }
 
-bool8 sub_8017630(struct UnkStruct_Shared* arg0, const struct UnkStruct_Shared* arg1)
+static bool8 AreGnameUnameDifferent(struct WirelessGnameUnamePair* pair1, const struct WirelessGnameUnamePair* pair2)
 {
     s32 i;
 
     for (i = 0; i < 2; i++)
     {
-        if (arg0->field_0.unk_00.playerTrainerId[i] != arg1->field_0.unk_00.playerTrainerId[i])
+        if (pair1->gname.unk_00.playerTrainerId[i] != pair2->gname.unk_00.playerTrainerId[i])
         {
             return TRUE;
         }
     }
 
-    for (i = 0; i < 8; i++)
+    for (i = 0; i < PLAYER_NAME_LENGTH + 1; i++)
     {
-        if (arg0->playerName[i] != arg1->playerName[i])
+        if (pair1->playerName[i] != pair2->playerName[i])
         {
             return TRUE;
         }
@@ -3694,34 +3735,34 @@ bool8 sub_8017630(struct UnkStruct_Shared* arg0, const struct UnkStruct_Shared*
     return FALSE;
 }
 
-bool32 sub_8017678(struct UnkStruct_Shared *arg0, struct UnkStruct_Shared *arg1)
+static bool32 AreUnionRoomPlayerGnamesDifferent(struct WirelessGnameUnamePair *pair1, struct WirelessGnameUnamePair *pair2)
 {
     s32 i;
 
-    if (arg0->field_0.activity != arg1->field_0.activity)
+    if (pair1->gname.activity != pair2->gname.activity)
     {
         return TRUE;
     }
 
-    if (arg0->field_0.started != arg1->field_0.started)
+    if (pair1->gname.started != pair2->gname.started)
     {
         return TRUE;
     }
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (arg0->field_0.child_sprite_gender[i] != arg1->field_0.child_sprite_gender[i])
+        if (pair1->gname.child_sprite_gender[i] != pair2->gname.child_sprite_gender[i])
         {
             return TRUE;
         }
     }
 
-    if (arg0->field_0.species != arg1->field_0.species)
+    if (pair1->gname.species != pair2->gname.species)
     {
         return TRUE;
     }
 
-    if (arg0->field_0.type != arg1->field_0.type)
+    if (pair1->gname.type != pair2->gname.type)
     {
         return TRUE;
     }
@@ -3729,38 +3770,38 @@ bool32 sub_8017678(struct UnkStruct_Shared *arg0, struct UnkStruct_Shared *arg1)
     return FALSE;
 }
 
-u32 sub_80176E4(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1)
+static u32 Findx20Inx1CArray(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1)
 {
     u8 result = 0xFF;
     s32 i;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (arg1[i].unk18 && !sub_8017630(&arg0->unk, &arg1[i].unk0))
+        if (arg1[i].active && !AreGnameUnameDifferent(&arg0->gname_uname, &arg1[i].gname_uname))
         {
             result = i;
-            arg1[i].unk18 = FALSE;
+            arg1[i].active = FALSE;
         }
     }
 
     return result;
 }
 
-u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2)
+static u8 Appendx1Ctox20(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2)
 {
     s32 i;
 
-    if (arg1->unk18)
+    if (arg1->active)
     {
         for (i = 0; i < arg2; i++)
         {
-            if (arg0[i].field_1A_0 == 0)
+            if (arg0[i].groupScheduledAnim == UNION_ROOM_SPAWN_NONE)
             {
-                arg0[i].unk = arg1->unk0;
+                arg0[i].gname_uname = arg1->gname_uname;
                 arg0[i].field_18 = 0;
-                arg0[i].field_1A_0 = 1;
+                arg0[i].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
                 arg0[i].field_1B = 64;
-                arg1->unk18 = FALSE;
+                arg1->active = FALSE;
                 return i;
             }
         }
@@ -3769,126 +3810,123 @@ u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2)
     return 0xFF;
 }
 
-void sub_80177B8(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id)
+static void PrintUnionRoomGroupOnWindow(u8 windowId, u8 x, u8 y, struct UnkStruct_x20 *group, u8 colorIdx, u8 id)
 {
-    u8 r2;
-    u8 sp0[6];
+    u8 activity;
+    u8 trainerId[6];
 
     ConvertIntToDecimalStringN(gStringVar4, id + 1, STR_CONV_MODE_LEADING_ZEROS, 2);
     StringAppend(gStringVar4, sText_Colon);
-    sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, 0);
-    arg1 += 18;
-    r2 = arg3->unk.field_0.activity;
-    if (arg3->field_1A_0 == 1 && !(r2 & 0x40))
+    UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, x, y, 0);
+    x += 18;
+    activity = group->gname_uname.gname.activity;
+    if (group->groupScheduledAnim == UNION_ROOM_SPAWN_IN && !(activity & IN_UNION_ROOM))
     {
-        sub_8018404(gStringVar4, arg3);
-        sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, arg4);
-        ConvertIntToDecimalStringN(sp0, arg3->unk.field_0.unk_00.playerTrainerId[0] | (arg3->unk.field_0.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
+        IntlConvPartnerUname7(gStringVar4, group);
+        UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, x, y, colorIdx);
+        ConvertIntToDecimalStringN(trainerId, group->gname_uname.gname.unk_00.playerTrainerId[0] | (group->gname_uname.gname.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
         StringCopy(gStringVar4, sText_ID);
-        StringAppend(gStringVar4, sp0);
-        sub_80173E0(arg0, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x88), arg2, arg4);
+        StringAppend(gStringVar4, trainerId);
+        UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x88), y, colorIdx);
     }
 }
 
-void sub_80178A0(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id)
+static void PrintGroupMemberCandidateOnWindowWithColor(u8 windowId, u8 x, u8 y, struct UnkStruct_x20 *group, u8 colorIdx, u8 id)
 {
-    u8 sp0[6];
+    u8 trainerId[6];
 
-    if (arg3->field_1A_0 == 1)
+    if (group->groupScheduledAnim == UNION_ROOM_SPAWN_IN)
     {
-        sub_8018404(gStringVar4, arg3);
-        sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, arg4);
-        ConvertIntToDecimalStringN(sp0, arg3->unk.field_0.unk_00.playerTrainerId[0] | (arg3->unk.field_0.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
+        IntlConvPartnerUname7(gStringVar4, group);
+        UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, x, y, colorIdx);
+        ConvertIntToDecimalStringN(trainerId, group->gname_uname.gname.unk_00.playerTrainerId[0] | (group->gname_uname.gname.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
         StringCopy(gStringVar4, sText_ID);
-        StringAppend(gStringVar4, sp0);
-        sub_80173E0(arg0, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x68), arg2, arg4);
+        StringAppend(gStringVar4, trainerId);
+        UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x68), y, colorIdx);
     }
 }
 
-bool32 sub_8017940(void)
+static bool32 PlayerIsTalkingToUnionRoomAide(void)
 {
     s16 x, y;
     GetXYCoordsOneStepInFrontOfPlayer(&x, &y);
+
     if (x != 9)
-    {
         return FALSE;
-    }
+
     if (y != 8)
-    {
         return FALSE;
-    }
+
     if (gPlayerAvatar.tileTransitionState == 2 || gPlayerAvatar.tileTransitionState == 0)
-    {
         return TRUE;
-    }
 
     return FALSE;
 }
 
-u32 sub_8017984(s32 arg0)
+static u32 GetResponseIdx_InviteToURoomActivity(s32 activity)
 {
-    switch (arg0)
+    switch (activity)
     {
-    case 5:
+    case ACTIVITY_CHAT:
         return 1;
-    case 4:
+    case ACTIVITY_TRADE:
         return 2;
-    case 8:
+    case ACTIVITY_CARD:
         return 3;
-    case 3:
+    case ACTIVITY_BATTLE_MULTI:
     default:
         return 0;
     }
 }
 
-u32 sub_80179AC(struct UnkStruct_x20 *arg0)
+static u32 ConvPartnerUnameAndGetWhetherMetAlready(struct UnkStruct_x20 *arg0)
 {
-    u8 sp0[30];
-    sub_8018404(sp0, arg0);
-    return sub_800E540(ReadAsU16(arg0->unk.field_0.unk_00.playerTrainerId), sp0);
+    u8 name[30];
+    IntlConvPartnerUname7(name, arg0);
+    return PlayerHasMetTrainerBefore(ReadAsU16(arg0->gname_uname.gname.unk_00.playerTrainerId), name);
 }
 
-s32 sub_80179D4(struct UnkStruct_Main0 *arg0, u8 arg1, u8 arg2, u32 playerGender)
+static s32 UnionRoomGetPlayerInteractionResponse(struct UnkStruct_Main0 *main0, bool8 overrideGender, u8 playerIdx, u32 playerGender)
 {
-    bool32 r2;
+    bool32 metBefore;
 
-    struct UnkStruct_x20 * r5 = &arg0->arr[arg2];
+    struct UnkStruct_x20 * r5 = &main0->arr[playerIdx];
 
-    if (!r5->unk.field_0.started && arg1 == 0)
+    if (!r5->gname_uname.gname.started && !overrideGender)
     {
-        sub_8018404(gStringVar1, r5);
-        r2 = sub_800E540(ReadAsU16(r5->unk.field_0.unk_00.playerTrainerId), gStringVar1);
-        if (r5->unk.field_0.activity == 0x45)
+        IntlConvPartnerUname7(gStringVar1, r5);
+        metBefore = PlayerHasMetTrainerBefore(ReadAsU16(r5->gname_uname.gname.unk_00.playerTrainerId), gStringVar1);
+        if (r5->gname_uname.gname.activity == (ACTIVITY_CHAT | IN_UNION_ROOM))
         {
-            StringExpandPlaceholders(gStringVar4, sJoinChatTexts[r2][playerGender]);
+            StringExpandPlaceholders(gStringVar4, sJoinChatTexts[metBefore][playerGender]);
             return 2;
         }
         else
         {
-            sub_8017020(sCommunicatingWaitTexts[r2]);
+            UR_PrintFieldMessage(sCommunicatingWaitTexts[metBefore]);
             return 1;
         }
     }
     else
     {
-        sub_8018404(gStringVar1, r5);
-        if (arg1 != 0)
+        IntlConvPartnerUname7(gStringVar1, r5);
+        if (overrideGender)
         {
-            playerGender = (r5->unk.field_0.unk_00.playerTrainerId[arg1 + 1] >> 3) & 1;
+            playerGender = (r5->gname_uname.gname.unk_00.playerTrainerId[overrideGender + 1] >> 3) & 1;
         }
-        switch (r5->unk.field_0.activity & 0x3F)
+        switch (r5->gname_uname.gname.activity & 0x3F)
         {
-        case 1:
-            StringExpandPlaceholders(gStringVar4, sBattleReactionTexts[playerGender][Random() % 4]);
+        case ACTIVITY_BATTLE_SINGLE:
+            StringExpandPlaceholders(gStringVar4, sBattleReactionTexts[playerGender][Random() % ARRAY_COUNT(sBattleReactionTexts[0])]);
             break;
-        case 4:
+        case ACTIVITY_TRADE:
             StringExpandPlaceholders(gStringVar4, sTradeReactionTexts[playerGender][Random() % 2]);
             break;
-        case 5:
-            StringExpandPlaceholders(gStringVar4, sChatReactionTexts[playerGender][Random() % 4]);
+        case ACTIVITY_CHAT:
+            StringExpandPlaceholders(gStringVar4, sChatReactionTexts[playerGender][Random() % ARRAY_COUNT(sChatReactionTexts[0])]);
             break;
-        case 8:
-            StringExpandPlaceholders(gStringVar4, sTrainerCardReactionTexts[playerGender][Random() % 2]);
+        case ACTIVITY_CARD:
+            StringExpandPlaceholders(gStringVar4, sTrainerCardReactionTexts[playerGender][Random() % ARRAY_COUNT(sTrainerCardReactionTexts[0])]);
             break;
         default:
             StringExpandPlaceholders(gStringVar4, sText_TrainerAppearsBusy);
@@ -3903,40 +3941,40 @@ void nullsub_14(u8 windowId, s32 itemId, u8 y)
 
 }
 
-void sub_8017B3C(u8 arg0, u8 arg1, struct GFtgtGname * arg2, const u8 * str, u8 arg4)
+static void TradeBoardPrintItemInfo(u8 windowId, u8 y, struct GFtgtGname * gname, const u8 * uname, u8 colorIdx)
 {
-    u8 sp8[4];
-    u16 r8 = arg2->species;
-    u8 r7 = arg2->type;
-    u8 r9 = arg2->level;
+    u8 levelStr[4];
+    u16 species = gname->species;
+    u8 type = gname->type;
+    u8 level = gname->level;
 
-    sub_80173E0(arg0, 1, str, 8, arg1, arg4);
-    if (r8 == SPECIES_EGG)
+    UR_AddTextPrinterParameterized(windowId, 1, uname, 8, y, colorIdx);
+    if (species == SPECIES_EGG)
     {
-        sub_80173E0(arg0, 1, sText_EggTrade, 0x44, arg1, arg4);
+        UR_AddTextPrinterParameterized(windowId, 1, sText_EggTrade, 0x44, y, colorIdx);
     }
     else
     {
-        blit_move_info_icon(arg0, r7 + 1, 0x44, arg1);
-        sub_80173E0(arg0, 1, gSpeciesNames[r8], 0x76, arg1, arg4);
-        ConvertIntToDecimalStringN(sp8, r9, STR_CONV_MODE_RIGHT_ALIGN, 3);
-        sub_80173E0(arg0, 1, sp8, 0xC6, arg1, arg4);
+        blit_move_info_icon(windowId, type + 1, 0x44, y);
+        UR_AddTextPrinterParameterized(windowId, 1, gSpeciesNames[species], 0x76, y, colorIdx);
+        ConvertIntToDecimalStringN(levelStr, level, STR_CONV_MODE_RIGHT_ALIGN, 3);
+        UR_AddTextPrinterParameterized(windowId, 1, levelStr, 0xC6, y, colorIdx);
     }
 }
 
-void sub_8017BE8(u8 windowId, s32 itemId, u8 y)
+static void TradeBoardListMenuItemPrintFunc(u8 windowId, s32 itemId, u8 y)
 {
-    struct UnkStruct_Leader *leader = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
     struct GFtgtGname *rfu;
     s32 i, j;
-    u8 sp4[11];
+    u8 playerName[11];
 
-    if (itemId == -3 && y == gUnknown_082F03A4.upText_Y)
+    if (itemId == -3 && y == sTradeBoardListMenuTemplate.upText_Y)
     {
-        rfu = sub_800F7DC();
+        rfu = GetHostRFUtgtGname();
         if (rfu->species != SPECIES_NONE)
         {
-            sub_8017B3C(windowId, y, rfu, gSaveBlock2Ptr->playerName, 5);
+            TradeBoardPrintItemInfo(windowId, y, rfu, gSaveBlock2Ptr->playerName, 5);
         }
     }
     else
@@ -3944,32 +3982,32 @@ void sub_8017BE8(u8 windowId, s32 itemId, u8 y)
         j = 0;
         for (i = 0; i < 8; i++)
         {
-            if (leader->field_0->arr[i].field_1A_0 == 1 && leader->field_0->arr[i].unk.field_0.species != SPECIES_NONE)
+            if (data->field_0->arr[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN && data->field_0->arr[i].gname_uname.gname.species != SPECIES_NONE)
             {
                 j++;
             }
             if (j == itemId + 1)
             {
-                sub_8018404(sp4, &leader->field_0->arr[i]);
-                sub_8017B3C(windowId, y, &leader->field_0->arr[i].unk.field_0, sp4, 6);
+                IntlConvPartnerUname7(playerName, &data->field_0->arr[i]);
+                TradeBoardPrintItemInfo(windowId, y, &data->field_0->arr[i].gname_uname.gname, playerName, 6);
                 break;
             }
         }
     }
 }
 
-s32 sub_8017CB0(struct UnkStruct_x20 * arg, s32 arg1)
+static s32 GetIndexOfNthTradeBoardOffer(struct UnkStruct_x20 * arg, s32 n)
 {
     s32 i;
     s32 j = 0;
 
     for (i = 0; i < 8; i++)
     {
-        if (arg[i].field_1A_0 == 1 && arg[i].unk.field_0.species != SPECIES_NONE)
+        if (arg[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN && arg[i].gname_uname.gname.species != SPECIES_NONE)
         {
             j++;
         }
-        if (j == arg1 + 1)
+        if (j == n + 1)
         {
             return i;
         }
@@ -3978,12 +4016,12 @@ s32 sub_8017CB0(struct UnkStruct_x20 * arg, s32 arg1)
     return -1;
 }
 
-s32 sub_8017CF8(s32 arg1, struct UnkStruct_Main0 *arg0)
+static s32 GetUnionRoomPlayerGender(s32 playerIdx, struct UnkStruct_Main0 *main0)
 {
-    return arg0->arr[arg1].unk.field_0.playerGender;
+    return main0->arr[playerIdx].gname_uname.gname.playerGender;
 }
 
-s32 sub_8017D04(u32 type, u32 species)
+static s32 IsRequestedTypeOrEggInPlayerParty(u32 type, u32 species)
 {
     s32 i;
 
@@ -3994,10 +4032,10 @@ s32 sub_8017D04(u32 type, u32 species)
             species = GetMonData(&gPlayerParty[i], MON_DATA_SPECIES2);
             if (species == SPECIES_EGG)
             {
-                return 0;
+                return UR_TRADE_MATCH;
             }
         }
-        return 2;
+        return UR_TRADE_NOEGG;
     }
     else
     {
@@ -4006,77 +4044,77 @@ s32 sub_8017D04(u32 type, u32 species)
             species = GetMonData(&gPlayerParty[i], MON_DATA_SPECIES2);
             if (gBaseStats[species].type1 == type || gBaseStats[species].type2 == type)
             {
-                return 0;
+                return UR_TRADE_MATCH;
             }
         }
-        return 1;
+        return UR_TRADE_NOTYPE;
     }
 }
 
-void sub_8017D9C(u8 *dst, s32 arg1, u32 playerGender)
+static void GetURoomActivityRejectMsg(u8 *dst, s32 acitivty, u32 playerGender)
 {
-    switch (arg1)
+    switch (acitivty)
     {
-    case 0x41:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sBattleDeclinedTexts[playerGender]);
         break;
-    case 0x45:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sChatDeclinedTexts[playerGender]);
         break;
-    case 0x44:
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_TradeOfferRejected);
         break;
-    case 0x48:
+    case ACTIVITY_CARD | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sShowTrainerCardDeclinedTexts[playerGender]);
         break;
     }
 }
 
-void sub_8017E00(u8 *dst, u8 arg1)
+static void GetURoomActivityStartMsg(u8 *dst, u8 acitivty)
 {
     u8 mpId = GetMultiplayerId();
     u8 gender = gLinkPlayers[mpId ^ 1].gender;
 
-    switch (arg1)
+    switch (acitivty)
     {
-    case 0x41:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
         StringCopy(dst, sStartActivityTexts[mpId][gender][0]);
         break;
-    case 0x44:
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
         StringCopy(dst, sStartActivityTexts[mpId][gender][2]);
         break;
-    case 0x45:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
         StringCopy(dst, sStartActivityTexts[mpId][gender][1]);
         break;
     }
 }
 
-s32 sub_8017EA0(u8 *dst, u32 gender, u16 *arg2, struct UnkStruct_URoom *arg3)
+static s32 GetChatLeaderActionRequestMessage(u8 *dst, u32 gender, u16 *activityData, struct WirelessLink_URoom *uroom)
 {
     s32 result = 0;
     u16 species = SPECIES_NONE;
     s32 i;
 
-    switch (arg2[0])
+    switch (activityData[0])
     {
-    case 0x41:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_BattleChallenge);
         result = 1;
         break;
-    case 0x45:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_ChatInvitation);
         result = 1;
         break;
-    case 0x44:
-        ConvertIntToDecimalStringN(arg3->field_58 + 0x00, sUnionRoomTrade.playerLevel, STR_CONV_MODE_LEFT_ALIGN, 3);
-        StringCopy(arg3->field_58 + 0x10, gSpeciesNames[sUnionRoomTrade.playerSpecies]);
-        for (i = 0; i < 4; i++)
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
+        ConvertIntToDecimalStringN(uroom->activityRequestStrbufs[0], sUnionRoomTrade.playerLevel, STR_CONV_MODE_LEFT_ALIGN, 3);
+        StringCopy(uroom->activityRequestStrbufs[1], gSpeciesNames[sUnionRoomTrade.playerSpecies]);
+        for (i = 0; i < RFU_CHILD_MAX; i++)
         {
             if (gRfuLinkStatus->partner[i].serialNo == 2)
             {
-                ConvertIntToDecimalStringN(arg3->field_58 + 0x20, arg2[2], STR_CONV_MODE_LEFT_ALIGN, 3);
-                StringCopy(arg3->field_58 + 0x30, gSpeciesNames[arg2[1]]);
-                species = arg2[1];
+                ConvertIntToDecimalStringN(uroom->activityRequestStrbufs[2], activityData[2], STR_CONV_MODE_LEFT_ALIGN, 3);
+                StringCopy(uroom->activityRequestStrbufs[3], gSpeciesNames[activityData[1]]);
+                species = activityData[1];
                 break;
             }
         }
@@ -4086,19 +4124,19 @@ s32 sub_8017EA0(u8 *dst, u32 gender, u16 *arg2, struct UnkStruct_URoom *arg3)
         }
         else
         {
-            for (i = 0; i < 4; i++)
+            for (i = 0; i < RFU_CHILD_MAX; i++)
             {
-                DynamicPlaceholderTextUtil_SetPlaceholderPtr(i, arg3->field_58 + 0x10 * i);
+                DynamicPlaceholderTextUtil_SetPlaceholderPtr(i, uroom->activityRequestStrbufs[i]);
             }
             DynamicPlaceholderTextUtil_ExpandPlaceholders(dst, sText_OfferToTradeMon);
         }
         result = 1;
         break;
-    case 0x48:
+    case ACTIVITY_CARD | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_ShowTrainerCard);
         result = 1;
         break;
-    case 0x40:
+    case IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_ChatDropped);
         result = 2;
         break;
@@ -4107,18 +4145,18 @@ s32 sub_8017EA0(u8 *dst, u32 gender, u16 *arg2, struct UnkStruct_URoom *arg3)
     return result;
 }
 
-bool32 sub_8017FD8(struct UnkStruct_URoom *arg0)
+static bool32 PollPartnerYesNoResponse(struct WirelessLink_URoom *data)
 {
     if (gRecvCmds[0][1] != 0)
     {
-        if (gRecvCmds[0][1] == 0x51)
+        if (gRecvCmds[0][1] == (ACTIVITY_ACCEPT | IN_UNION_ROOM))
         {
-            arg0->field_98 = 0x51;
+            data->partnerYesNoResponse = ACTIVITY_ACCEPT | IN_UNION_ROOM;
             return TRUE;
         }
-        else if (gRecvCmds[0][1] == 0x52)
+        else if (gRecvCmds[0][1] == (ACTIVITY_DECLINE | IN_UNION_ROOM))
         {
-            arg0->field_98 = 0x52;
+            data->partnerYesNoResponse = ACTIVITY_DECLINE | IN_UNION_ROOM;
             return TRUE;
         }
     }
@@ -4132,7 +4170,7 @@ bool32 InUnionRoom(void)
            ? TRUE : FALSE;
 }
 
-bool32 HasAtLeastTwoMonsOfLevel30OrLower(void)
+static bool32 HasAtLeastTwoMonsOfLevel30OrLower(void)
 {
     s32 i;
     s32 count = 0;
@@ -4152,16 +4190,16 @@ bool32 HasAtLeastTwoMonsOfLevel30OrLower(void)
         return FALSE;
 }
 
-static void ResetUnionRoomTrade(struct UnionRoomTrade *arg0)
+static void ResetUnionRoomTrade(struct UnionRoomTrade *uroomTrade)
 {
-    arg0->field_0 = 0;
-    arg0->type = 0;
-    arg0->playerPersonality = 0;
-    arg0->playerSpecies = 0;
-    arg0->playerLevel = 0;
-    arg0->species = 0;
-    arg0->level = 0;
-    arg0->personality = 0;
+    uroomTrade->field_0 = 0;
+    uroomTrade->type = 0;
+    uroomTrade->playerPersonality = 0;
+    uroomTrade->playerSpecies = 0;
+    uroomTrade->playerLevel = 0;
+    uroomTrade->species = 0;
+    uroomTrade->level = 0;
+    uroomTrade->personality = 0;
 }
 
 void Script_ResetUnionRoomTrade(void)
@@ -4228,36 +4266,36 @@ static u32 GetPartyPositionOfRegisteredMon(struct UnionRoomTrade *trade, u8 mult
     return response;
 }
 
-void sub_801818C(bool32 arg0)
+static void HandleCancelTrade(bool32 unlockObjs)
 {
-    sub_80173B0();
+    UR_ClearBg0();
     ScriptContext2_Disable();
-    sub_8098524();
-    gUnknown_02022C2C = 0;
-    if (arg0)
+    UnionRoom_UnlockPlayerAndChatPartner();
+    gPlayerCurrActivity = 0;
+    if (unlockObjs)
     {
         sub_8010FCC(sUnionRoomTrade.type, sUnionRoomTrade.playerSpecies, sUnionRoomTrade.playerLevel);
-        sub_8011090(0x40, 0, 0);
+        UpdateGameDataWithActivitySpriteGendersFlag(IN_UNION_ROOM, 0, 0);
     }
 }
 
-void sub_80181CC(void)
+static void UR_EnableScriptContext2AndFreezeObjectEvents(void)
 {
     ScriptContext2_Enable();
     ScriptFreezeObjectEvents();
 }
 
-u8 sub_80181DC(struct UnkStruct_URoom *arg0)
+static u8 GetActivePartnerSpriteGenderParam(struct WirelessLink_URoom *data)
 {
     u8 retVal = 0x80;
     u8 i;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (arg0->field_C->arr[i].unk18)
+        if (data->field_C->arr[i].active)
         {
-            retVal |= arg0->field_C->arr[i].unk0.field_0.playerGender << 3;
-            retVal |= arg0->field_C->arr[i].unk0.field_0.unk_00.playerTrainerId[0] & 7;
+            retVal |= data->field_C->arr[i].gname_uname.gname.playerGender << 3;
+            retVal |= data->field_C->arr[i].gname_uname.gname.unk_00.playerTrainerId[0] & 7;
             break;
         }
     }
@@ -4265,7 +4303,7 @@ u8 sub_80181DC(struct UnkStruct_URoom *arg0)
     return retVal;
 }
 
-void sub_8018220(u8 *unused, struct UnkStruct_URoom *arg1, bool8 arg2)
+static void ViewURoomPartnerTrainerCard(u8 *unused, struct WirelessLink_URoom *data, bool8 isParent)
 {
     struct TrainerCard *trainerCard = &gTrainerCards[GetMultiplayerId() ^ 1];
     s32 i;
@@ -4273,67 +4311,67 @@ void sub_8018220(u8 *unused, struct UnkStruct_URoom *arg1, bool8 arg2)
 
     DynamicPlaceholderTextUtil_Reset();
 
-    StringCopy(arg1->field_C0[0], gTrainerClassNames[sub_8068BB0()]);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(0, arg1->field_C0[0]);
+    StringCopy(data->field_C0[0], gTrainerClassNames[sub_8068BB0()]);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(0, data->field_C0[0]);
 
     DynamicPlaceholderTextUtil_SetPlaceholderPtr(1, trainerCard->playerName);
 
-    StringCopy(arg1->field_174, sCardColorTexts[trainerCard->stars]);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(2, arg1->field_174);
+    StringCopy(data->field_174, sCardColorTexts[trainerCard->stars]);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(2, data->field_174);
 
-    ConvertIntToDecimalStringN(arg1->field_C0[2], trainerCard->caughtMonsCount, STR_CONV_MODE_LEFT_ALIGN, 3);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(3, arg1->field_C0[2]);
+    ConvertIntToDecimalStringN(data->field_C0[2], trainerCard->caughtMonsCount, STR_CONV_MODE_LEFT_ALIGN, 3);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(3, data->field_C0[2]);
 
-    ConvertIntToDecimalStringN(arg1->field_C0[3], trainerCard->playTimeHours, STR_CONV_MODE_LEFT_ALIGN, 3);
-    ConvertIntToDecimalStringN(arg1->field_C0[4], trainerCard->playTimeMinutes, STR_CONV_MODE_LEADING_ZEROS, 2);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(4, arg1->field_C0[3]);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(5, arg1->field_C0[4]);
+    ConvertIntToDecimalStringN(data->field_C0[3], trainerCard->playTimeHours, STR_CONV_MODE_LEFT_ALIGN, 3);
+    ConvertIntToDecimalStringN(data->field_C0[4], trainerCard->playTimeMinutes, STR_CONV_MODE_LEADING_ZEROS, 2);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(4, data->field_C0[3]);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(5, data->field_C0[4]);
 
-    DynamicPlaceholderTextUtil_ExpandPlaceholders(arg1->field_1A4, sText_TrainerCardInfoPage1);
-    StringCopy(gStringVar4, arg1->field_1A4);
+    DynamicPlaceholderTextUtil_ExpandPlaceholders(data->field_1A4, sText_TrainerCardInfoPage1);
+    StringCopy(gStringVar4, data->field_1A4);
 
     n = trainerCard->linkBattleWins;
     if (n > 9999)
     {
         n = 9999;
     }
-    ConvertIntToDecimalStringN(arg1->field_C0[0], n, STR_CONV_MODE_LEFT_ALIGN, 4);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(0, arg1->field_C0[0]);
+    ConvertIntToDecimalStringN(data->field_C0[0], n, STR_CONV_MODE_LEFT_ALIGN, 4);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(0, data->field_C0[0]);
 
     n = trainerCard->linkBattleLosses;
     if (n > 9999)
     {
         n = 9999;
     }
-    ConvertIntToDecimalStringN(arg1->field_C0[1], n, STR_CONV_MODE_LEFT_ALIGN, 4);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(2, arg1->field_C0[1]);
+    ConvertIntToDecimalStringN(data->field_C0[1], n, STR_CONV_MODE_LEFT_ALIGN, 4);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(2, data->field_C0[1]);
 
-    ConvertIntToDecimalStringN(arg1->field_C0[2], trainerCard->pokemonTrades, STR_CONV_MODE_LEFT_ALIGN, 5);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(3, arg1->field_C0[2]);
+    ConvertIntToDecimalStringN(data->field_C0[2], trainerCard->pokemonTrades, STR_CONV_MODE_LEFT_ALIGN, 5);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(3, data->field_C0[2]);
 
     for (i = 0; i < TRAINER_CARD_PROFILE_LENGTH; i++)
     {
-        CopyEasyChatWord(arg1->field_C0[i + 3], trainerCard->easyChatProfile[i]);
-        DynamicPlaceholderTextUtil_SetPlaceholderPtr(i + 4, arg1->field_C0[i + 3]);
+        CopyEasyChatWord(data->field_C0[i + 3], trainerCard->easyChatProfile[i]);
+        DynamicPlaceholderTextUtil_SetPlaceholderPtr(i + 4, data->field_C0[i + 3]);
     }
 
-    DynamicPlaceholderTextUtil_ExpandPlaceholders(arg1->field_1A4, sText_TrainerCardInfoPage2);
-    StringAppend(gStringVar4, arg1->field_1A4);
+    DynamicPlaceholderTextUtil_ExpandPlaceholders(data->field_1A4, sText_TrainerCardInfoPage2);
+    StringAppend(gStringVar4, data->field_1A4);
 
-    if (arg2 == TRUE)
+    if (isParent == TRUE)
     {
-        DynamicPlaceholderTextUtil_ExpandPlaceholders(arg1->field_1A4, sText_FinishedCheckingPlayersTrainerCard);
-        StringAppend(gStringVar4, arg1->field_1A4);
+        DynamicPlaceholderTextUtil_ExpandPlaceholders(data->field_1A4, sText_FinishedCheckingPlayersTrainerCard);
+        StringAppend(gStringVar4, data->field_1A4);
     }
-    else if (arg2 == FALSE)
+    else if (isParent == FALSE)
     {
-        DynamicPlaceholderTextUtil_ExpandPlaceholders(arg1->field_1A4, sGladToMeetYouTexts[trainerCard->gender]);
-        StringAppend(gStringVar4, arg1->field_1A4);
+        DynamicPlaceholderTextUtil_ExpandPlaceholders(data->field_1A4, sGladToMeetYouTexts[trainerCard->gender]);
+        StringAppend(gStringVar4, data->field_1A4);
     }
 }
 
-void sub_8018404(u8 *dest, struct UnkStruct_x20 *arg1)
+static void IntlConvPartnerUname7(u8 *dest, struct UnkStruct_x20 *arg1)
 {
-    StringCopy7(dest, arg1->unk.playerName);
-    ConvertInternationalString(dest, arg1->unk.field_0.unk_00.language);
+    StringCopy7(dest, arg1->gname_uname.playerName);
+    ConvertInternationalString(dest, arg1->gname_uname.gname.unk_00.language);
 }