Document text input strings

include/union_room_chat.h

@@ -1,6 +1,17 @@
 #ifndef GUARD_UNION_ROOM_CHAT_H
 #define GUARD_UNION_ROOM_CHAT_H
 
+enum
+{
+    UNION_ROOM_KB_PAGE_UPPER,
+    UNION_ROOM_KB_PAGE_LOWER,
+    UNION_ROOM_KB_PAGE_EMOJI,
+    UNION_ROOM_KB_PAGE_COUNT
+};
+
+#define UNION_ROOM_KB_ROW_COUNT 10
+
+
 void sub_801DD98(void);
 void copy_strings_to_sav1(void);