More charmap and home/text.asm documentation for JP chars

engine/map_objects.asm

@@ -2474,8 +2474,10 @@ Function56cd: ; 56cd
 	push bc
 	call Coord2Tile
 	pop bc
+; NPCs disappear if standing on tile $60-$7f (or $e0-$ff),
+; since those IDs are for text characters and textbox frames.
 	ld a, [hl]
-	cp MAPOBJECT_VISIBLE_TILE_LIMIT
+	cp FIRST_REGULAR_TEXT_CHAR
 	jr nc, .nope
 .ok8
 	dec d

engine/radio.asm

@@ -134,7 +134,7 @@ PrintRadioLine:
 	cp 2
 	jr nc, .print
 	inc hl
-	ld [hl], "<START>"
+	ld [hl], TX_START
 	inc a
 	ld [wNumRadioLinesPrinted], a
 	cp 2
@@ -813,7 +813,7 @@ CopyDexEntryPart1:
 	ld bc, SCREEN_WIDTH - 1
 	call FarCopyBytes
 	ld hl, wPokedexShowPointerAddr
-	ld [hl], "<START>"
+	ld [hl], TX_START
 	inc hl
 	ld [hl], "<LINE>"
 	inc hl

engine/routines/checknickerrors.asm

@@ -64,10 +64,10 @@ CheckNickErrors:: ; 669f
 ; table defining which characters are actually text commands
 ; format:
 	;      ≥           <
-	db "<START>",  TX_BOX    + 1
+	db TX_START,   TX_BOX    + 1
 	db "<PLAY_G>", $18       + 1
-	db $1d,        "%"       + 1
-	db $35,        "<GREEN>" + 1
+	db "<NI>",     "%"       + 1
+	db "<ROUTE>",  "<GREEN>" + 1
 	db "<ENEMY>",  "<ENEMY>" + 1
 	db "<MOM>",    "<TM>"    + 1
 	db "<ROCKET>", "┘"       + 1