More function documentation in union_room, link, link_rfu_2

src/battle_main.c

@@ -1152,7 +1152,7 @@ static void CB2_PreInitMultiBattle(void)
         {
             ++gBattleCommunication[MULTIUSE_STATE];
             if (gWirelessCommType)
-                sub_800AB9C();
+                PrepareSendLinkCmd2FFE_or_RfuCmd6600();
             else
                 Link_TryStartSend5FFF();
         }