Use features of RGBDS 1.0.0 (#537)

61 files changed, 378 insertions, 375 deletions

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 570c217c..968b5026 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@master
         with:
           path: rgbds
-          ref: v0.9.3
+          ref: v1.0.0
           repository: gbdev/rgbds
 
       - name: Install rgbds
diff --git a/.rgbds-version b/.rgbds-version
index 965065db..3eefcb9d 100644
--- a/.rgbds-version
+++ b/.rgbds-version
@@ -1 +1 @@
-0.9.3
+1.0.0
diff --git a/INSTALL.md b/INSTALL.md
index 7add0173..ec45f109 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -42,9 +42,9 @@ Run setup and leave the default settings. At the "**Select Packages**" step, cho
 
 Double click on the text that says "**Skip**" next to each package to select the most recent version to install.
 
-Then follow the [**rgbds** install instructions](https://rgbds.gbdev.io/install#pre-built) for Windows with Cygwin to install **rgbds 0.9.3**.
+Then follow the [**rgbds** install instructions](https://rgbds.gbdev.io/install#pre-built) for Windows with Cygwin to install **rgbds 1.0.0**.
 
-**Note:** If you already have an installed rgbds older than 0.9.3, you will need to update to 0.9.3. Ignore this if you have never installed rgbds before. If a version newer than 0.9.3 does not work, try downloading 0.9.3.
+**Note:** If you already have an installed rgbds older than 1.0.0, you will need to update to 1.0.0. Ignore this if you have never installed rgbds before. If a version newer than 1.0.0 does not work, try downloading 1.0.0.
 
 Now open the **Cygwin terminal** and enter the following commands.
 
@@ -67,7 +67,7 @@ Install [**Homebrew**](https://brew.sh/). Follow the official instructions.
 
 Open **Terminal** and prepare to enter commands.
 
-Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#pre-built) for macOS to install **rgbds 0.9.3**.
+Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#pre-built) for macOS to install **rgbds 1.0.0**.
 
 Now you're ready to [build **pokered**](#build-pokered).
 
@@ -84,7 +84,7 @@ To install the software required for **pokered**:
 sudo apt-get install make gcc git
 ```
 
-Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.
 
 ### OpenSUSE
 
@@ -94,7 +94,7 @@ To install the software required for **pokered**:
 sudo zypper install make gcc git
 ```
 
-Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.
 
 ### Arch Linux
 
@@ -104,7 +104,7 @@ To install the software required for **pokered**:
 sudo pacman -S make gcc git rgbds
 ```
 
-If you want to compile and install **rgbds** yourself instead, then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+If you want to compile and install **rgbds** yourself instead, then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.
 
 ### Termux
 
@@ -120,7 +120,7 @@ To install **rgbds**:
 pkg install rgbds
 ```
 
-If you want to compile and install **rgbds** yourself instead, then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+If you want to compile and install **rgbds** yourself instead, then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.
 
 ### Other distros
 
@@ -131,7 +131,7 @@ If your distro is not listed here, try to find the required software in its repo
 - `git`
 - `rgbds`
 
-If `rgbds` is not available, you'll need to follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+If `rgbds` is not available, you'll need to follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.
 
 Now you're ready to [build **pokered**](#build-pokered).
 
@@ -153,8 +153,8 @@ make
 
 ### Build with a local rgbds version
 
-If you have different projects that require different versions of `rgbds`, it might not be convenient to install rgbds 0.9.3 globally. Instead, you can put its files in a directory within pokered, such as `pokered/rgbds-0.9.3/`. Then specify it when you run `make`:
+If you have different projects that require different versions of `rgbds`, it might not be convenient to install rgbds 1.0.0 globally. Instead, you can put its files in a directory within pokered, such as `pokered/rgbds-1.0.0/`. Then specify it when you run `make`:
 
 ```bash
-make RGBDS=rgbds-0.9.3/
+make RGBDS=rgbds-1.0.0/
 ```
diff --git a/Makefile b/Makefile
index 0ff65aac..0ca4ec7c 100644
--- a/Makefile
+++ b/Makefile
@@ -38,6 +38,11 @@ RGBFIX  ?= $(RGBDS)rgbfix
 RGBGFX  ?= $(RGBDS)rgbgfx
 RGBLINK ?= $(RGBDS)rgblink
 
+RGBASMFLAGS  ?= -Weverything -Wtruncation=1
+RGBLINKFLAGS ?= -Weverything -Wtruncation=1
+RGBFIXFLAGS  ?= -Weverything
+RGBGFXFLAGS  ?= -Weverything
+
 
 ### Build targets
 
@@ -85,7 +90,7 @@ tools:
 	$(MAKE) -C tools/
 
 
-RGBASMFLAGS = -Q8 -P includes.asm -Weverything -Wtruncation=1
+RGBASMFLAGS += -Q8 -P includes.asm
 # Create a sym/map for debug purposes if `make` run with `DEBUG=1`
 ifeq ($(DEBUG),1)
 RGBASMFLAGS += -E
@@ -128,21 +133,23 @@ $(foreach obj, $(pokeblue_vc_obj), $(eval $(call DEP,$(obj),$(obj:_blue_vc.o=.as
 endif
 
 
-pokered_pad        = 0x00
-pokeblue_pad       = 0x00
-pokered_vc_pad     = 0x00
-pokeblue_vc_pad    = 0x00
-pokeblue_debug_pad = 0xff
+RGBLINKFLAGS += -d
+pokered.gbc:        RGBLINKFLAGS += -p 0x00
+pokeblue.gbc:       RGBLINKFLAGS += -p 0x00
+pokeblue_debug.gbc: RGBLINKFLAGS += -p 0xff
+pokered_vc.gbc:     RGBLINKFLAGS += -p 0x00
+pokeblue_vc.gbc:    RGBLINKFLAGS += -p 0x00
 
-pokered_opt        = -jsv -n 0 -k 01 -l 0x33 -m MBC3+RAM+BATTERY -r 03 -t "POKEMON RED"
-pokeblue_opt       = -jsv -n 0 -k 01 -l 0x33 -m MBC3+RAM+BATTERY -r 03 -t "POKEMON BLUE"
-pokeblue_debug_opt = -jsv -n 0 -k 01 -l 0x33 -m MBC3+RAM+BATTERY -r 03 -t "POKEMON BLUE"
-pokered_vc_opt     = -jsv -n 0 -k 01 -l 0x33 -m MBC3+RAM+BATTERY -r 03 -t "POKEMON RED"
-pokeblue_vc_opt    = -jsv -n 0 -k 01 -l 0x33 -m MBC3+RAM+BATTERY -r 03 -t "POKEMON BLUE"
+RGBFIXFLAGS += -jsv -n 0 -k 01 -l 0x33 -m MBC3+RAM+BATTERY -r 03
+pokered.gbc:        RGBFIXFLAGS += -p 0x00 -t "POKEMON RED"
+pokeblue.gbc:       RGBFIXFLAGS += -p 0x00 -t "POKEMON BLUE"
+pokeblue_debug.gbc: RGBFIXFLAGS += -p 0xff -t "POKEMON BLUE"
+pokered_vc.gbc:     RGBFIXFLAGS += -p 0x00 -t "POKEMON RED"
+pokeblue_vc.gbc:    RGBFIXFLAGS += -p 0x00 -t "POKEMON BLUE"
 
 %.gbc: $$(%_obj) layout.link
-	$(RGBLINK) -p $($*_pad) -d -m $*.map -n $*.sym -l layout.link -o $@ $(filter %.o,$^)
-	$(RGBFIX) -p $($*_pad) $($*_opt) $@
+	$(RGBLINK) $(RGBLINKFLAGS) -l layout.link -m $*.map -n $*.sym -o $@ $(filter %.o,$^)
+	$(RGBFIX) $(RGBFIXFLAGS) $@
 
 
 ### Misc file-specific graphics rules
@@ -150,13 +157,13 @@ pokeblue_vc_opt    = -jsv -n 0 -k 01 -l 0x33 -m MBC3+RAM+BATTERY -r 03 -t "POKEM
 gfx/battle/move_anim_0.2bpp: tools/gfx += --trim-whitespace
 gfx/battle/move_anim_1.2bpp: tools/gfx += --trim-whitespace
 
-gfx/intro/blue_jigglypuff_1.2bpp: rgbgfx += --columns
-gfx/intro/blue_jigglypuff_2.2bpp: rgbgfx += --columns
-gfx/intro/blue_jigglypuff_3.2bpp: rgbgfx += --columns
-gfx/intro/red_nidorino_1.2bpp: rgbgfx += --columns
-gfx/intro/red_nidorino_2.2bpp: rgbgfx += --columns
-gfx/intro/red_nidorino_3.2bpp: rgbgfx += --columns
-gfx/intro/gengar.2bpp: rgbgfx += --columns
+gfx/intro/blue_jigglypuff_1.2bpp: RGBGFXFLAGS += --columns
+gfx/intro/blue_jigglypuff_2.2bpp: RGBGFXFLAGS += --columns
+gfx/intro/blue_jigglypuff_3.2bpp: RGBGFXFLAGS += --columns
+gfx/intro/red_nidorino_1.2bpp: RGBGFXFLAGS += --columns
+gfx/intro/red_nidorino_2.2bpp: RGBGFXFLAGS += --columns
+gfx/intro/red_nidorino_3.2bpp: RGBGFXFLAGS += --columns
+gfx/intro/gengar.2bpp: RGBGFXFLAGS += --columns
 gfx/intro/gengar.2bpp: tools/gfx += --remove-duplicates --preserve=0x19,0x76
 
 gfx/credits/the_end.2bpp: tools/gfx += --interleave --png=$<
@@ -173,12 +180,12 @@ gfx/trade/game_boy.2bpp: tools/gfx += --remove-duplicates
 ### Catch-all graphics rules
 
 %.2bpp: %.png
-	$(RGBGFX) --colors dmg=e4 $(rgbgfx) -o $@ $<
+	$(RGBGFX) --colors dmg $(RGBGFXFLAGS) -o $@ $<
 	$(if $(tools/gfx),\
 		tools/gfx $(tools/gfx) -o $@ $@ || $$($(RM) $@ && false))
 
 %.1bpp: %.png
-	$(RGBGFX) --colors dmg=e4 $(rgbgfx) --depth 1 -o $@ $<
+	$(RGBGFX) --colors dmg $(RGBGFXFLAGS) --depth 1 -o $@ $<
 	$(if $(tools/gfx),\
 		tools/gfx $(tools/gfx) --depth 1 -o $@ $@ || $$($(RM) $@ && false))
 
diff --git a/engine/battle/animations.asm b/engine/battle/animations.asm
index 6f255dd6..40b2047b 100644
--- a/engine/battle/animations.asm
+++ b/engine/battle/animations.asm
@@ -1603,7 +1603,7 @@ _AnimationSquishMonPic:
 	call AnimCopyRowRight
 	inc hl
 .next
-	ld [hl], " "
+	ld [hl], ' '
 	pop hl
 	ld de, SCREEN_WIDTH
 	add hl, de
@@ -1838,7 +1838,7 @@ _AnimationSlideMonOff:
 ; plus one instead.
 	cp $61
 	ret c
-	ld a, " "
+	ld a, ' '
 	ret
 
 .EnemyNextTile
@@ -1848,7 +1848,7 @@ _AnimationSlideMonOff:
 ; the lower right tile is in the first column to slide off the screen.
 	cp $30
 	ret c
-	ld a, " "
+	ld a, ' '
 	ret
 
 AnimationSlideMonHalfOff:
diff --git a/engine/battle/core.asm b/engine/battle/core.asm
index 83a52c2a..87abf2e8 100644
--- a/engine/battle/core.asm
+++ b/engine/battle/core.asm
@@ -20,7 +20,7 @@ SlidePlayerAndEnemySilhouettesOnScreen:
 	ld hl, vBGMap0
 	ld bc, TILEMAP_AREA
 .clearBackgroundLoop
-	ld a, " "
+	ld a, ' '
 	ld [hli], a
 	dec bc
 	ld a, b
@@ -1984,11 +1984,11 @@ CenterMonName:
 .loop
 	inc de
 	ld a, [de]
-	cp "@"
+	cp '@'
 	jr z, .done
 	inc de
 	ld a, [de]
-	cp "@"
+	cp '@'
 	jr z, .done
 	dec hl
 	dec b
@@ -2036,15 +2036,15 @@ DisplayBattleMenu::
 	call CopyData
 ; the following simulates the keystrokes by drawing menus on screen
 	hlcoord 9, 14
-	ld [hl], "▶"
+	ld [hl], '▶'
 	ld c, 80
 	call DelayFrames
-	ld [hl], " "
+	ld [hl], ' '
 	hlcoord 9, 16
-	ld [hl], "▶"
+	ld [hl], '▶'
 	ld c, 50
 	call DelayFrames
-	ld [hl], "▷"
+	ld [hl], '▷'
 	ld a, $2 ; select the "ITEM" menu
 	jp .upperLeftMenuItemWasNotSelected
 .oldManName
@@ -2062,7 +2062,7 @@ DisplayBattleMenu::
 .leftColumn ; put cursor in left column of menu
 	ld a, [wBattleType]
 	cp BATTLE_TYPE_SAFARI
-	ld a, " "
+	ld a, ' '
 	jr z, .safariLeftColumn
 ; put cursor in left column for normal battle menu (i.e. when it's not a Safari battle)
 	ldcoord_a 15, 14 ; clear upper cursor position in right column
@@ -2095,7 +2095,7 @@ DisplayBattleMenu::
 .rightColumn ; put cursor in right column of menu
 	ld a, [wBattleType]
 	cp BATTLE_TYPE_SAFARI
-	ld a, " "
+	ld a, ' '
 	jr z, .safariRightColumn
 ; put cursor in right column for normal battle menu (i.e. when it's not a Safari battle)
 	ldcoord_a 9, 14 ; clear upper cursor position in left column
@@ -2328,7 +2328,7 @@ PartyMenuOrRockOrRun:
 .partyMonDeselected
 	hlcoord 11, 11
 	ld bc, 6 * SCREEN_WIDTH + 9
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	xor a ; NORMAL_PARTY_MENU
 	ld [wPartyMenuTypeOrMessageID], a
@@ -2495,9 +2495,9 @@ MoveSelectionMenu:
 	   ; so it is necessary to put the di ei block to not cause tearing
 	call TextBoxBorder
 	hlcoord 4, 12
-	ld [hl], "─"
+	ld [hl], '─'
 	hlcoord 10, 12
-	ld [hl], "┘"
+	ld [hl], '┘'
 	ei
 	hlcoord 6, 13
 	call .writemoves
@@ -2603,7 +2603,7 @@ SelectMenuItem:
 	dec a
 	ld bc, SCREEN_WIDTH
 	call AddNTimes
-	ld [hl], "▷"
+	ld [hl], '▷'
 .select
 	ld hl, hUILayoutFlags
 	set BIT_DOUBLE_SPACED_MENU, [hl]
@@ -2886,9 +2886,9 @@ PrintMenuItem:
 	ld de, TypeText
 	call PlaceString
 	hlcoord 7, 11
-	ld [hl], "/"
+	ld [hl], '/'
 	hlcoord 5, 9
-	ld [hl], "/"
+	ld [hl], '/'
 	hlcoord 5, 11
 	ld de, wBattleMenuCurrentPP
 	lb bc, 1, 2
@@ -6841,17 +6841,17 @@ InitWildBattle:
 	ld [hli], a   ; write front sprite pointer
 	ld [hl], b
 	ld hl, wEnemyMonNick  ; set name to "GHOST"
-	ld a, "G"
+	ld a, 'G'
 	ld [hli], a
-	ld a, "H"
+	ld a, 'H'
 	ld [hli], a
-	ld a, "O"
+	ld a, 'O'
 	ld [hli], a
-	ld a, "S"
+	ld a, 'S'
 	ld [hli], a
-	ld a, "T"
+	ld a, 'T'
 	ld [hli], a
-	ld [hl], "@"
+	ld [hl], '@'
 	ld a, [wCurPartySpecies]
 	push af
 	ld a, MON_GHOST
diff --git a/engine/battle/effects.asm b/engine/battle/effects.asm
index e111f783..413c34d9 100644
--- a/engine/battle/effects.asm
+++ b/engine/battle/effects.asm
@@ -743,7 +743,7 @@ FellText:
 
 PrintStatText:
 	ld hl, StatModTextStrings
-	ld c, "@"
+	ld c, '@'
 .findStatName_outer
 	dec b
 	jr z, .foundStatName
diff --git a/engine/battle/link_battle_versus_text.asm b/engine/battle/link_battle_versus_text.asm
index 374dcabc..d37d40c7 100644
--- a/engine/battle/link_battle_versus_text.asm
+++ b/engine/battle/link_battle_versus_text.asm
@@ -13,9 +13,9 @@ DisplayLinkBattleVersusTextBox:
 	call PlaceString
 ; place bold "VS" tiles between the names
 	hlcoord 9, 8
-	ld a, "<BOLD_V>"
+	ld a, '<BOLD_V>'
 	ld [hli], a
-	ld [hl], "<BOLD_S>"
+	ld [hl], '<BOLD_S>'
 	xor a
 	ld [wUpdateSpritesEnabled], a
 	callfar SetupPlayerAndEnemyPokeballs
diff --git a/engine/battle/misc.asm b/engine/battle/misc.asm
index 66675dbf..3deebc61 100644
--- a/engine/battle/misc.asm
+++ b/engine/battle/misc.asm
@@ -17,7 +17,7 @@ FormatMovesString:
 	ld hl, wNameBuffer
 .copyNameLoop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr z, .doneCopyingName
 	ld [de], a
 	inc de
@@ -26,7 +26,7 @@ FormatMovesString:
 	ld a, b
 	ld [wNumMovesMinusOne], a
 	inc b
-	ld a, "<NEXT>"
+	ld a, '<NEXT>'
 	ld [de], a
 	inc de
 	pop hl
@@ -35,19 +35,19 @@ FormatMovesString:
 	jr z, .done
 	jr .printMoveNameLoop
 .printDashLoop
-	ld a, "-"
+	ld a, '-'
 	ld [de], a
 	inc de
 	inc b
 	ld a, b
 	cp NUM_MOVES
 	jr z, .done
-	ld a, "<NEXT>"
+	ld a, '<NEXT>'
 	ld [de], a
 	inc de
 	jr .printDashLoop
 .done
-	ld a, "@"
+	ld a, '@'
 	ld [de], a
 	ret
 
diff --git a/engine/battle/print_type.asm b/engine/battle/print_type.asm
index e7c6729c..6ebd4189 100644
--- a/engine/battle/print_type.asm
+++ b/engine/battle/print_type.asm
@@ -25,7 +25,7 @@ PrintType:
 
 ; erase "TYPE2/" if the mon only has 1 type
 EraseType2Text:
-	ld a, " "
+	ld a, ' '
 	ld bc, $13
 	add hl, bc
 	ld bc, $6
diff --git a/engine/battle/save_trainer_name.asm b/engine/battle/save_trainer_name.asm
index b25d5a11..08260029 100644
--- a/engine/battle/save_trainer_name.asm
+++ b/engine/battle/save_trainer_name.asm
@@ -14,7 +14,7 @@ SaveTrainerName::
 	ld a, [hli]
 	ld [de], a
 	inc de
-	cp "@"
+	cp '@'
 	jr nz, .CopyCharacter
 	ret
 
diff --git a/engine/events/diploma.asm b/engine/events/diploma.asm
index 900e3782..b4ccbb07 100644
--- a/engine/events/diploma.asm
+++ b/engine/events/diploma.asm
@@ -79,7 +79,7 @@ UnusedPlayerNameLengthFunc:
 	lb bc, $ff, $00
 .loop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	ret z
 	dec c
 	jr .loop
diff --git a/engine/events/evolve_trade.asm b/engine/events/evolve_trade.asm
index 8ec7ad5c..7dfc2433 100644
--- a/engine/events/evolve_trade.asm
+++ b/engine/events/evolve_trade.asm
@@ -6,13 +6,13 @@ InGameTrade_CheckForTradeEvo:
 ; Graveler's English name and Haunter's early English name "Spectre".
 ; The final release replaced Graveler and Haunter in TradeMons.
 	ld a, [wInGameTradeReceiveMonName]
-	cp "G" ; GRAVELER
+	cp 'G' ; GRAVELER
 	jr z, .nameMatched
 	; "SPECTRE" (HAUNTER)
-	cp "S"
+	cp 'S'
 	ret nz
 	ld a, [wInGameTradeReceiveMonName + 1]
-	cp "P"
+	cp 'P'
 	ret nz
 .nameMatched
 	ld a, [wPartyCount]
diff --git a/engine/events/give_pokemon.asm b/engine/events/give_pokemon.asm
index 640a3dba..b25ef048 100644
--- a/engine/events/give_pokemon.asm
+++ b/engine/events/give_pokemon.asm
@@ -24,15 +24,15 @@ _GivePokemon::
 	cp 9
 	jr c, .singleDigitBoxNum
 	sub 9
-	ld [hl], "1"
+	ld [hl], '1'
 	inc hl
-	add "0"
+	add '0'
 	jr .next
 .singleDigitBoxNum
-	add "1"
+	add '1'
 .next
 	ld [hli], a
-	ld [hl], "@"
+	ld [hl], '@'
 	ld hl, SentToBoxText
 	call PrintText
 	scf
diff --git a/engine/events/pokedex_rating.asm b/engine/events/pokedex_rating.asm
index 1086257a..510b11a3 100644
--- a/engine/events/pokedex_rating.asm
+++ b/engine/events/pokedex_rating.asm
@@ -42,7 +42,7 @@ DisplayDexRating:
 	inc de
 .copyRatingTextLoop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr z, .doneCopying
 	ld [de], a
 	inc de
diff --git a/engine/gfx/hp_bar.asm b/engine/gfx/hp_bar.asm
index c1ae598e..d8dcaa24 100644
--- a/engine/gfx/hp_bar.asm
+++ b/engine/gfx/hp_bar.asm
@@ -223,7 +223,7 @@ UpdateHPBar_PrintHPNumber:
 .next
 	add hl, de
 	push hl
-	ld a, " "
+	ld a, ' '
 	ld [hli], a
 	ld [hli], a
 	ld [hli], a
diff --git a/engine/items/town_map.asm b/engine/items/town_map.asm
index 227ee033..6758adea 100644
--- a/engine/items/town_map.asm
+++ b/engine/items/town_map.asm
@@ -57,7 +57,7 @@ DisplayTownMap:
 	ld a, [hli]
 	ld [de], a
 	inc de
-	cp "@"
+	cp '@'
 	jr nz, .copyMapName
 	hlcoord 1, 0
 	ld de, wNameBuffer
@@ -166,7 +166,7 @@ LoadTownMap_Fly::
 	ld hl, wFlyLocationsList
 	decoord 18, 0
 .townMapFlyLoop
-	ld a, " "
+	ld a, ' '
 	ld [de], a
 	push hl
 	push hl
@@ -183,9 +183,9 @@ LoadTownMap_Fly::
 	ld c, 15
 	call DelayFrames
 	hlcoord 18, 0
-	ld [hl], "▲"
+	ld [hl], '▲'
 	hlcoord 19, 0
-	ld [hl], "▼"
+	ld [hl], '▼'
 	pop hl
 .inputLoop
 	push hl
@@ -363,7 +363,7 @@ DrawPlayerOrBirdSprite:
 	ld a, [hli]
 	ld [de], a
 	inc de
-	cp "@"
+	cp '@'
 	jr nz, .loop
 	ld hl, wShadowOAM
 	ld de, wShadowOAMBackup
diff --git a/engine/link/cable_club.asm b/engine/link/cable_club.asm
index a4307532..c94b2693 100644
--- a/engine/link/cable_club.asm
+++ b/engine/link/cable_club.asm
@@ -482,7 +482,7 @@ TradeCenter_SelectMon:
 	ld a, 16
 	ld [wTopMenuItemY], a
 .selectStatsMenuItem
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 11, 16
 	ld a, PAD_RIGHT | PAD_B | PAD_A
 	ld [wMenuWatchedKeys], a
@@ -499,7 +499,7 @@ TradeCenter_SelectMon:
 	call LoadScreenTilesFromBuffer1
 	jp .playerMonMenu
 .selectTradeMenuItem
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 1, 16
 	ld a, PAD_LEFT | PAD_B | PAD_A
 	ld [wMenuWatchedKeys], a
@@ -547,10 +547,10 @@ TradeCenter_SelectMon:
 	ld l, a
 	ld a, [wMenuCursorLocation + 1]
 	ld h, a
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 .cancelMenuItem_Loop
-	ld a, "▶" ; filled arrow cursor
+	ld a, '▶' ; filled arrow cursor
 	ldcoord_a 1, 16
 .cancelMenuItem_JoypadLoop
 	call JoypadLowSensitivity
@@ -562,14 +562,14 @@ TradeCenter_SelectMon:
 	bit B_PAD_UP, a
 	jr z, .cancelMenuItem_JoypadLoop
 ; if Up pressed
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 1, 16
 	ld a, [wPartyCount]
 	dec a
 	ld [wCurrentMenuItem], a
 	jp .playerMonMenu
 .cancelMenuItem_APressed
-	ld a, "▷" ; unfilled arrow cursor
+	ld a, '▷' ; unfilled arrow cursor
 	ldcoord_a 1, 16
 	ld a, $f
 	ld [wSerialExchangeNybbleSendData], a
@@ -619,7 +619,7 @@ TradeCenter_PlaceSelectedEnemyMonMenuCursor:
 	hlcoord 1, 9
 	ld bc, SCREEN_WIDTH
 	call AddNTimes
-	ld [hl], "▷" ; cursor
+	ld [hl], '▷' ; cursor
 	ret
 
 TradeCenter_DisplayStats:
@@ -950,7 +950,7 @@ CableClub_TextBoxBorder:
 	push hl
 	ld a, $7b ; border left vertical line tile
 	ld [hli], a
-	ld a, " "
+	ld a, ' '
 	call CableClub_DrawHorizontalLine
 	ld [hl], $77 ; border right vertical line tile
 	pop hl
diff --git a/engine/menus/main_menu.asm b/engine/menus/main_menu.asm
index c6f8547b..f4d8ec03 100644
--- a/engine/menus/main_menu.asm
+++ b/engine/menus/main_menu.asm
@@ -227,9 +227,9 @@ LinkMenu:
 	ld a, SC_START | SC_INTERNAL
 	ldh [rSC], a
 .skipStartingTransfer
-	ld b, " "
-	ld c, " "
-	ld d, "▷"
+	ld b, ' '
+	ld c, ' '
+	ld d, '▷'
 	ld a, [wLinkMenuSelectionSendBuffer]
 	and PAD_B << 2 ; was B button pressed?
 	jr nz, .updateCursorPosition
@@ -682,7 +682,7 @@ SetCursorPositionsFromOptions:
 	ld e, a
 	ld d, 0
 	add hl, de
-	ld [hl], "▷"
+	ld [hl], '▷'
 	ret
 
 ; table that indicates how the 3 text speed options affect frame delays
@@ -709,7 +709,7 @@ CheckForPlayerNameInSRAM:
 	ld hl, sPlayerName
 .loop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr z, .found
 	dec b
 	jr nz, .loop
diff --git a/engine/menus/naming_screen.asm b/engine/menus/naming_screen.asm
index 14eb0b28..fda482e3 100644
--- a/engine/menus/naming_screen.asm
+++ b/engine/menus/naming_screen.asm
@@ -40,7 +40,7 @@ AskName:
 	pop af
 	ld [wUpdateSpritesEnabled], a
 	ld a, [wStringBuffer]
-	cp "@"
+	cp '@'
 	ret nz
 .declinedNickname
 	ld d, h
@@ -64,7 +64,7 @@ DisplayNameRaterScreen::
 	call RestoreScreenTilesAndReloadTilePatterns
 	call LoadGBPal
 	ld a, [wStringBuffer]
-	cp "@"
+	cp '@'
 	jr z, .playerCancelled
 	ld hl, wPartyMonNicks
 	ld bc, NAME_LENGTH
@@ -108,7 +108,7 @@ DisplayNamingScreen:
 	ld [wMenuWatchedKeys], a
 	ld a, 7
 	ld [wMaxMenuItem], a
-	ld a, "@"
+	ld a, '@'
 	ld [wStringBuffer], a
 	xor a
 	ld hl, wNamingScreenSubmitName
@@ -231,10 +231,10 @@ DisplayNamingScreen:
 	ld [wNamingScreenLetter], a
 	call CalcStringLength
 	ld a, [wNamingScreenLetter]
-	cp "ﾞ"
+	cp 'ﾞ'
 	ld de, Dakutens
 	jr z, .dakutensAndHandakutens
-	cp "ﾟ"
+	cp 'ﾟ'
 	ld de, Handakutens
 	jr z, .dakutensAndHandakutens
 	ld a, [wNamingScreenType]
@@ -259,7 +259,7 @@ DisplayNamingScreen:
 .addLetter
 	ld a, [wNamingScreenLetter]
 	ld [hli], a
-	ld [hl], "@"
+	ld [hl], '@'
 	ld a, SFX_PRESS_AB
 	call PlaySound
 	ret
@@ -269,7 +269,7 @@ DisplayNamingScreen:
 	ret z
 	call CalcStringLength
 	dec hl
-	ld [hl], "@"
+	ld [hl], '@'
 	ret
 .pressedRight
 	ld a, [wCurrentMenuItem]
@@ -442,7 +442,7 @@ CalcStringLength:
 	ld c, $0
 .loop
 	ld a, [hl]
-	cp "@"
+	cp '@'
 	ret z
 	inc hl
 	inc c
@@ -468,7 +468,7 @@ PrintNamingText:
 	call PlaceString
 	ld hl, $1
 	add hl, bc
-	ld [hl], "の" ; leftover from Japanese version; blank tile $c9 in English
+	ld [hl], 'の' ; leftover from Japanese version; blank tile $c9 in English
 	hlcoord 1, 3
 	ld de, NicknameTextString
 	jr .placeString
diff --git a/engine/menus/party_menu.asm b/engine/menus/party_menu.asm
index 81472c31..f2688b52 100644
--- a/engine/menus/party_menu.asm
+++ b/engine/menus/party_menu.asm
@@ -51,7 +51,7 @@ RedrawPartyMenu_::
 	dec hl
 	dec hl
 	dec hl
-	ld a, "▷" ; unfilled right arrow menu cursor
+	ld a, '▷' ; unfilled right arrow menu cursor
 	ld [hli], a ; place the cursor
 	inc hl
 	inc hl
diff --git a/engine/menus/pokedex.asm b/engine/menus/pokedex.asm
index 1f58fd68..3e4096bc 100644
--- a/engine/menus/pokedex.asm
+++ b/engine/menus/pokedex.asm
@@ -121,7 +121,7 @@ HandlePokedexSideMenu:
 	push bc
 	hlcoord 0, 3
 	ld de, 20
-	lb bc, " ", 13
+	lb bc, ' ', 13
 	call DrawTileLine ; cover up the menu cursor in the pokemon list
 	pop bc
 	ret
@@ -130,7 +130,7 @@ HandlePokedexSideMenu:
 	push bc
 	hlcoord 15, 10
 	ld de, 20
-	lb bc, " ", 7
+	lb bc, ' ', 7
 	call DrawTileLine ; cover up the menu cursor in the side menu
 	pop bc
 	jr .exitSideMenu
@@ -159,7 +159,7 @@ HandlePokedexListMenu:
 	ldh [hAutoBGTransferEnabled], a
 ; draw the horizontal line separating the seen and owned amounts from the menu
 	hlcoord 15, 8
-	ld a, "─"
+	ld a, '─'
 	ld [hli], a
 	ld [hli], a
 	ld [hli], a
@@ -251,7 +251,7 @@ HandlePokedexListMenu:
 	ld hl, wPokedexOwned
 	call IsPokemonBitSet
 	pop hl
-	ld a, " "
+	ld a, ' '
 	jr z, .writeTile
 	ld a, $72 ; pokeball tile
 .writeTile
@@ -476,9 +476,9 @@ ShowPokedexDataInternal:
 	call IndexToPokedex
 
 	hlcoord 2, 8
-	ld a, "№"
+	ld a, '№'
 	ld [hli], a
-	ld a, "<DOT>"
+	ld a, '<DOT>'
 	ld [hli], a
 	ld de, wPokedexNum
 	lb bc, LEADING_ZEROES | 1, 3
@@ -518,14 +518,14 @@ ShowPokedexDataInternal:
 	hlcoord 12, 6
 	lb bc, 1, 2
 	call PrintNumber ; print feet (height)
-	ld a, "′"
+	ld a, '′'
 	ld [hl], a
 	inc de
 	inc de ; de = address of inches (height)
 	hlcoord 15, 6
 	lb bc, LEADING_ZEROES | 1, 2
 	call PrintNumber ; print inches (height)
-	ld a, "″"
+	ld a, '″'
 	ld [hl], a
 ; now print the weight (note that weight is stored in tenths of pounds internally)
 	inc de
@@ -553,12 +553,12 @@ ShowPokedexDataInternal:
 	ldh a, [hDexWeight]
 	sbc 0
 	jr nc, .next
-	ld [hl], "0" ; if the weight is less than 10, put a 0 before the decimal point
+	ld [hl], '0' ; if the weight is less than 10, put a 0 before the decimal point
 .next
 	inc hl
 	ld a, [hli]
 	ld [hld], a ; make space for the decimal point by moving the last digit forward one tile
-	ld [hl], "<DOT>" ; decimal point tile
+	ld [hl], '<DOT>' ; decimal point tile
 	pop af
 	ldh [hDexWeight + 1], a ; restore original value of [hDexWeight + 1]
 	pop af
diff --git a/engine/menus/save.asm b/engine/menus/save.asm
index 7112207f..9dfdd949 100644
--- a/engine/menus/save.asm
+++ b/engine/menus/save.asm
@@ -474,11 +474,11 @@ DisplayChangeBoxMenu:
 	jr c, .singleDigitBoxNum
 	sub 9
 	hlcoord 8, 2
-	ld [hl], "1"
-	add "0"
+	ld [hl], '1'
+	add '0'
 	jr .next
 .singleDigitBoxNum
-	add "1"
+	add '1'
 .next
 	ldcoord_a 9, 2
 	hlcoord 1, 2
diff --git a/engine/menus/start_sub_menus.asm b/engine/menus/start_sub_menus.asm
index e845941f..8ba05b3f 100644
--- a/engine/menus/start_sub_menus.asm
+++ b/engine/menus/start_sub_menus.asm
@@ -289,7 +289,7 @@ ErasePartyMenuCursors::
 	ld bc, 2 * SCREEN_WIDTH ; menu cursor positions are 2 rows apart
 	ld a, 6 ; 6 menu cursor positions
 .loop
-	ld [hl], " "
+	ld [hl], ' '
 	add hl, bc
 	dec a
 	jr nz, .loop
@@ -329,7 +329,7 @@ StartMenu_Item::
 	jp RedisplayStartMenu
 .choseItem
 ; erase menu cursor (blank each tile in front of an item name)
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 5, 4
 	ldcoord_a 5, 6
 	ldcoord_a 5, 8
@@ -481,7 +481,7 @@ DrawTrainerInfo:
 	predef DisplayPicCenteredOrUpperRight
 	call DisableLCD
 	hlcoord 0, 2
-	ld a, " "
+	ld a, ' '
 	call TrainerInfo_DrawVerticalLine
 	hlcoord 1, 2
 	call TrainerInfo_DrawVerticalLine
@@ -671,7 +671,7 @@ SwitchPartyMon_ClearGfx:
 	ld bc, SCREEN_WIDTH * 2
 	call AddNTimes
 	ld c, SCREEN_WIDTH * 2
-	ld a, " "
+	ld a, ' '
 .clearMonBGLoop ; clear the mon's row in the party menu
 	ld [hli], a
 	dec c
diff --git a/engine/menus/text_box.asm b/engine/menus/text_box.asm
index 076b395f..94c432c7 100644
--- a/engine/menus/text_box.asm
+++ b/engine/menus/text_box.asm
@@ -470,7 +470,7 @@ DisplayFieldMoveMonMenu:
 	jr z, .reachedName
 .skipNameLoop ; skip past current name
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr nz, .skipNameLoop
 	jr .skipNamesLoop
 .reachedName
diff --git a/engine/movie/credits.asm b/engine/movie/credits.asm
index bdd66e8e..1a68a7b5 100644
--- a/engine/movie/credits.asm
+++ b/engine/movie/credits.asm
@@ -164,7 +164,7 @@ FillFourRowsWithBlack:
 FillMiddleOfScreenWithWhite:
 	hlcoord 0, 4
 	ld bc, SCREEN_WIDTH * 10
-	ld a, " "
+	ld a, ' '
 	jp FillMemory
 
 Credits:
diff --git a/engine/movie/hall_of_fame.asm b/engine/movie/hall_of_fame.asm
index 7653b4bc..b2c0de42 100644
--- a/engine/movie/hall_of_fame.asm
+++ b/engine/movie/hall_of_fame.asm
@@ -8,7 +8,7 @@ AnimateHallOfFame:
 	call DisableLCD
 	ld hl, vBGMap0
 	ld bc, 2 * TILEMAP_AREA
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	call EnableLCD
 	ld hl, rLCDC
diff --git a/engine/movie/oak_speech/oak_speech2.asm b/engine/movie/oak_speech/oak_speech2.asm
index ceaa6838..df05091a 100644
--- a/engine/movie/oak_speech/oak_speech2.asm
+++ b/engine/movie/oak_speech/oak_speech2.asm
@@ -16,7 +16,7 @@ ChoosePlayerName:
 	ld [wNamingScreenType], a
 	call DisplayNamingScreen
 	ld a, [wStringBuffer]
-	cp "@"
+	cp '@'
 	jr z, .customName
 	call ClearScreen
 	call Delay3
@@ -49,7 +49,7 @@ ChooseRivalName:
 	ld [wNamingScreenType], a
 	call DisplayNamingScreen
 	ld a, [wStringBuffer]
-	cp "@"
+	cp '@'
 	jr z, .customName
 	call ClearScreen
 	call Delay3
@@ -199,7 +199,7 @@ GetDefaultName:
 	ld e, l
 .innerLoop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr nz, .innerLoop
 	ld a, b
 	cp c
diff --git a/engine/movie/title.asm b/engine/movie/title.asm
index bcd01f33..698dd5e0 100644
--- a/engine/movie/title.asm
+++ b/engine/movie/title.asm
@@ -357,7 +357,7 @@ DrawPlayerCharacter:
 ClearBothBGMaps:
 	ld hl, vBGMap0
 	ld bc, 2 * TILEMAP_AREA
-	ld a, " "
+	ld a, ' '
 	jp FillMemory
 
 LoadTitleMonSprite:
diff --git a/engine/movie/trade.asm b/engine/movie/trade.asm
index 4cb9d394..bf77f21e 100644
--- a/engine/movie/trade.asm
+++ b/engine/movie/trade.asm
@@ -150,7 +150,7 @@ Trade_Delay80:
 Trade_ClearTileMap:
 	hlcoord 0, 0
 	ld bc, SCREEN_AREA
-	ld a, " "
+	ld a, ' '
 	jp FillMemory
 
 LoadTradingGFXAndMonNames:
@@ -168,7 +168,7 @@ LoadTradingGFXAndMonNames:
 	call FarCopyData2
 	ld hl, vBGMap0
 	ld bc, 2 * TILEMAP_AREA
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	call ClearSprites
 	ld a, $ff
diff --git a/engine/overworld/player_state.asm b/engine/overworld/player_state.asm
index a5d3ee3e..263ab634 100644
--- a/engine/overworld/player_state.asm
+++ b/engine/overworld/player_state.asm
@@ -240,7 +240,7 @@ PrintSafariZoneSteps::
 	cp 10
 	jr nc, .tenOrMore
 	hlcoord 5, 3
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 .tenOrMore
 	hlcoord 6, 3
diff --git a/engine/pokemon/bills_pc.asm b/engine/pokemon/bills_pc.asm
index 6d522377..0fcdedc6 100644
--- a/engine/pokemon/bills_pc.asm
+++ b/engine/pokemon/bills_pc.asm
@@ -157,11 +157,11 @@ BillsPCMenu:
 ; two digit box num
 	sub 9
 	hlcoord 17, 16
-	ld [hl], "1"
-	add "0"
+	ld [hl], '1'
+	add '0'
 	jr .next
 .singleDigitBoxNum
-	add "1"
+	add '1'
 .next
 	ldcoord_a 18, 16
 	hlcoord 10, 16
@@ -240,15 +240,15 @@ BillsPCDeposit:
 	cp 9
 	jr c, .singleDigitBoxNum
 	sub 9
-	ld [hl], "1"
+	ld [hl], '1'
 	inc hl
-	add "0"
+	add '0'
 	jr .next
 .singleDigitBoxNum
-	add "1"
+	add '1'
 .next
 	ld [hli], a
-	ld [hl], "@"
+	ld [hl], '@'
 	ld hl, MonWasStoredText
 	call PrintText
 	jp BillsPCMenu
diff --git a/engine/pokemon/evos_moves.asm b/engine/pokemon/evos_moves.asm
index afae4396..1b92a093 100644
--- a/engine/pokemon/evos_moves.asm
+++ b/engine/pokemon/evos_moves.asm
@@ -278,7 +278,7 @@ RenameEvolvedMon:
 	cp [hl]
 	inc hl
 	ret nz
-	cp "@"
+	cp '@'
 	jr nz, .compareNamesLoop
 	ld a, [wWhichPokemon]
 	ld bc, NAME_LENGTH
diff --git a/engine/pokemon/status_ailments.asm b/engine/pokemon/status_ailments.asm
index 05205a34..2c5b3bcd 100644
--- a/engine/pokemon/status_ailments.asm
+++ b/engine/pokemon/status_ailments.asm
@@ -10,37 +10,37 @@ PrintStatusAilment::
 	jr nz, .par
 	and SLP_MASK
 	ret z
-	ld a, "S"
+	ld a, 'S'
 	ld [hli], a
-	ld a, "L"
+	ld a, 'L'
 	ld [hli], a
-	ld [hl], "P"
+	ld [hl], 'P'
 	ret
 .psn
-	ld a, "P"
+	ld a, 'P'
 	ld [hli], a
-	ld a, "S"
+	ld a, 'S'
 	ld [hli], a
-	ld [hl], "N"
+	ld [hl], 'N'
 	ret
 .brn
-	ld a, "B"
+	ld a, 'B'
 	ld [hli], a
-	ld a, "R"
+	ld a, 'R'
 	ld [hli], a
-	ld [hl], "N"
+	ld [hl], 'N'
 	ret
 .frz
-	ld a, "F"
+	ld a, 'F'
 	ld [hli], a
-	ld a, "R"
+	ld a, 'R'
 	ld [hli], a
-	ld [hl], "Z"
+	ld [hl], 'Z'
 	ret
 .par
-	ld a, "P"
+	ld a, 'P'
 	ld [hli], a
-	ld a, "A"
+	ld a, 'A'
 	ld [hli], a
-	ld [hl], "R"
+	ld [hl], 'R'
 	ret
diff --git a/engine/pokemon/status_screen.asm b/engine/pokemon/status_screen.asm
index 344e7802..80cdfb17 100644
--- a/engine/pokemon/status_screen.asm
+++ b/engine/pokemon/status_screen.asm
@@ -52,7 +52,7 @@ DrawHP_:
 	ld de, wLoadedMonHP
 	lb bc, 2, 3
 	call PrintNumber
-	ld a, "/"
+	ld a, '/'
 	ld [hli], a
 	ld de, wLoadedMonMaxHP
 	lb bc, 2, 3
@@ -110,9 +110,9 @@ StatusScreen:
 	call DrawLineBox ; Draws the box around name, HP and status
 	ld de, -6
 	add hl, de
-	ld [hl], "<DOT>"
+	ld [hl], '<DOT>'
 	dec hl
-	ld [hl], "№"
+	ld [hl], '№'
 	hlcoord 19, 9
 	lb bc, 8, 6
 	call DrawLineBox ; Draws the box around types, ID No. and OT
@@ -329,13 +329,13 @@ StatusScreen2:
 	ld b, a ; Number of moves ?
 	hlcoord 11, 10
 	ld de, SCREEN_WIDTH * 2
-	ld a, "<BOLD_P>"
+	ld a, '<BOLD_P>'
 	call StatusScreen_PrintPP ; Print "PP"
 	ld a, b
 	and a
 	jr z, .InitPP
 	ld c, a
-	ld a, "-"
+	ld a, '-'
 	call StatusScreen_PrintPP ; Fill the rest with --
 .InitPP
 	ld hl, wLoadedMonMoves
@@ -372,7 +372,7 @@ StatusScreen2:
 	ld de, wStatusScreenCurrentPP
 	lb bc, 1, 2
 	call PrintNumber
-	ld a, "/"
+	ld a, '/'
 	ld [hli], a
 	ld de, wMaxPP
 	lb bc, 1, 2
@@ -400,7 +400,7 @@ StatusScreen2:
 	ld [wLoadedMonLevel], a ; Increase temporarily if not 100
 .Level100
 	hlcoord 14, 6
-	ld [hl], "<to>"
+	ld [hl], '<to>'
 	inc hl
 	inc hl
 	call PrintLevel
@@ -469,7 +469,7 @@ StatusScreenExpText:
 
 StatusScreen_ClearName:
 	ld bc, 10
-	ld a, " "
+	ld a, ' '
 	jp FillMemory
 
 StatusScreen_PrintPP:
diff --git a/engine/slots/slot_machine.asm b/engine/slots/slot_machine.asm
index 9dc32397..147519c7 100644
--- a/engine/slots/slot_machine.asm
+++ b/engine/slots/slot_machine.asm
@@ -629,7 +629,7 @@ SlotMachine_PrintWinningSymbol:
 	inc a
 	ld [hl], a
 	hlcoord 18, 16
-	ld [hl], "▼"
+	ld [hl], '▼'
 	ret
 
 SlotMachine_SubtractBetFromPlayerCoins:
diff --git a/home/copy2.asm b/home/copy2.asm
index 9e5b1f14..1ad9fbba 100644
--- a/home/copy2.asm
+++ b/home/copy2.asm
@@ -161,7 +161,7 @@ CopyVideoDataDouble::
 
 ClearScreenArea::
 ; Clear tilemap area cxb at hl.
-	ld a, " "
+	ld a, ' '
 	ld de, SCREEN_WIDTH
 .loopRows
 	push hl
@@ -218,7 +218,7 @@ ClearScreen::
 	ld bc, SCREEN_AREA
 	inc b
 	hlcoord 0, 0
-	ld a, " "
+	ld a, ' '
 .loop
 	ld [hli], a
 	dec c
diff --git a/home/copy_string.asm b/home/copy_string.asm
index 05f9ba80..3531aaf8 100644
--- a/home/copy_string.asm
+++ b/home/copy_string.asm
@@ -8,6 +8,6 @@ CopyString::
 	ld a, [de]
 	inc de
 	ld [hli], a
-	cp "@"
+	cp '@'
 	jr nz, CopyString
 	ret
diff --git a/home/list_menu.asm b/home/list_menu.asm
index b7204e65..00b5704a 100644
--- a/home/list_menu.asm
+++ b/home/list_menu.asm
@@ -66,7 +66,7 @@ DisplayListMenuIDLoop::
 	and a ; is it the Old Man battle?
 	jr z, .notOldManBattle
 .oldManBattle
-	ld a, "▶"
+	ld a, '▶'
 	ldcoord_a 5, 4 ; place menu cursor in front of first menu entry
 	ld c, 80
 	call DelayFrames
@@ -478,7 +478,7 @@ PrintListMenuEntries::
 	push hl
 	ld bc, SCREEN_WIDTH + 8 ; 1 row down and 8 columns right
 	add hl, bc
-	ld a, "×"
+	ld a, '×'
 	ld [hli], a
 	ld a, [wNamedObjectIndex]
 	push af
@@ -506,7 +506,7 @@ PrintListMenuEntries::
 	cp c ; is it this item?
 	jr nz, .nextListEntry
 	dec hl
-	ld a, "▷"
+	ld a, '▷'
 	ld [hli], a
 .nextListEntry
 	ld bc, 2 * SCREEN_WIDTH ; 2 rows
@@ -517,7 +517,7 @@ PrintListMenuEntries::
 	jp nz, .loop
 	ld bc, -8
 	add hl, bc
-	ld a, "▼"
+	ld a, '▼'
 	ld [hl], a
 	ret
 .printCancelMenuItem
diff --git a/home/names.asm b/home/names.asm
index 5848cb19..4b6f6903 100644
--- a/home/names.asm
+++ b/home/names.asm
@@ -16,7 +16,7 @@ GetMonName::
 	ld bc, NAME_LENGTH - 1
 	call CopyData
 	ld hl, wNameBuffer + NAME_LENGTH - 1
-	ld [hl], "@"
+	ld [hl], '@'
 	pop de
 	pop af
 	ldh [hLoadedROMBank], a
@@ -74,7 +74,7 @@ GetMachineName::
 ; now get the machine number and convert it to text
 	ld a, [wNamedObjectIndex]
 	sub TM01 - 1
-	ld b, "0"
+	ld b, '0'
 .FirstDigit
 	sub 10
 	jr c, .SecondDigit
@@ -87,11 +87,11 @@ GetMachineName::
 	ld [de], a
 	inc de
 	pop af
-	ld b, "0"
+	ld b, '0'
 	add b
 	ld [de], a
 	inc de
-	ld a, "@"
+	ld a, '@'
 	ld [de], a
 	pop af
 	ld [wNamedObjectIndex], a
diff --git a/home/names2.asm b/home/names2.asm
index 7178e706..90d04b8d 100644
--- a/home/names2.asm
+++ b/home/names2.asm
@@ -75,7 +75,7 @@ GetName::
 	ld e, l
 .nextChar
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr nz, .nextChar
 	inc c
 	ld a, b
diff --git a/home/pokemon.asm b/home/pokemon.asm
index 3b990848..d720a642 100644
--- a/home/pokemon.asm
+++ b/home/pokemon.asm
@@ -320,11 +320,11 @@ PrintStatusCondition::
 	pop de
 	jr nz, PrintStatusConditionNotFainted
 ; if the pokemon's HP is 0, print "FNT"
-	ld a, "F"
+	ld a, 'F'
 	ld [hli], a
-	ld a, "N"
+	ld a, 'N'
 	ld [hli], a
-	ld [hl], "T"
+	ld [hl], 'T'
 	and a
 	ret
 
@@ -337,7 +337,7 @@ PrintStatusConditionNotFainted::
 ; hl = destination address
 ; [wLoadedMonLevel] = level
 PrintLevel::
-	ld a, "<LV>" ; ":L" tile ID
+	ld a, '<LV>' ; ":L" tile ID
 	ld [hli], a
 	ld c, 2 ; number of digits
 	ld a, [wLoadedMonLevel] ; level
@@ -353,7 +353,7 @@ PrintLevel::
 ; hl = destination address
 ; [wLoadedMonLevel] = level
 PrintLevelFull::
-	ld a, "<LV>" ; ":L" tile ID
+	ld a, '<LV>' ; ":L" tile ID
 	ld [hli], a
 	ld c, 3 ; number of digits
 	ld a, [wLoadedMonLevel] ; level
diff --git a/home/print_bcd.asm b/home/print_bcd.asm
index 57ec12a8..2e501be5 100644
--- a/home/print_bcd.asm
+++ b/home/print_bcd.asm
@@ -20,7 +20,7 @@ PrintBCDNumber::
 	jr z, .loop
 	bit BIT_LEADING_ZEROES, b
 	jr nz, .loop
-	ld [hl], "¥"
+	ld [hl], '¥'
 	inc hl
 .loop
 	ld a, [de]
@@ -40,10 +40,10 @@ PrintBCDNumber::
 .skipRightAlignmentAdjustment
 	bit BIT_MONEY_SIGN, b
 	jr z, .skipCurrencySymbol
-	ld [hl], "¥"
+	ld [hl], '¥'
 	inc hl
 .skipCurrencySymbol
-	ld [hl], "0"
+	ld [hl], '0'
 	call PrintLetterDelay
 	inc hl
 .done
@@ -59,13 +59,13 @@ PrintBCDDigit::
 ; if bit 7 is set, then no numbers have been printed yet
 	bit BIT_MONEY_SIGN, b
 	jr z, .skipCurrencySymbol
-	ld [hl], "¥"
+	ld [hl], '¥'
 	inc hl
 	res BIT_MONEY_SIGN, b
 .skipCurrencySymbol
 	res BIT_LEADING_ZEROES, b
 .outputDigit
-	add "0"
+	add '0'
 	ld [hli], a
 	jp PrintLetterDelay
 .zeroDigit
diff --git a/home/print_num.asm b/home/print_num.asm
index ef202239..32fae363 100644
--- a/home/print_num.asm
+++ b/home/print_num.asm
@@ -107,14 +107,14 @@ ENDM
 	call .PrintLeadingZero
 	jr .next
 .past
-	ld a, "0"
+	ld a, '0'
 	add c
 	ld [hl], a
 .next
 
 	call .NextDigit
 .ones
-	ld a, "0"
+	ld a, '0'
 	add b
 	ld [hli], a
 	pop de
@@ -191,7 +191,7 @@ ENDM
 	or c
 	jr z, .PrintLeadingZero
 
-	ld a, "0"
+	ld a, '0'
 	add c
 	ld [hl], a
 	ldh [hPastLeadingZeros], a
@@ -200,7 +200,7 @@ ENDM
 .PrintLeadingZero:
 	bit BIT_LEADING_ZEROES, d
 	ret z
-	ld [hl], "0"
+	ld [hl], '0'
 	ret
 
 .NextDigit:
diff --git a/home/text.asm b/home/text.asm
index 17fb7266..8ec872e0 100644
--- a/home/text.asm
+++ b/home/text.asm
@@ -3,7 +3,7 @@ TextBoxBorder::
 
 	; top row
 	push hl
-	ld a, "┌"
+	ld a, '┌'
 	ld [hli], a
 	inc a ; "─"
 	call .PlaceChars
@@ -17,11 +17,11 @@ TextBoxBorder::
 	; middle rows
 .next
 	push hl
-	ld a, "│"
+	ld a, '│'
 	ld [hli], a
-	ld a, " "
+	ld a, ' '
 	call .PlaceChars
-	ld [hl], "│"
+	ld [hl], '│'
 	pop hl
 
 	ld de, SCREEN_WIDTH
@@ -30,11 +30,11 @@ TextBoxBorder::
 	jr nz, .next
 
 	; bottom row
-	ld a, "└"
+	ld a, '└'
 	ld [hli], a
-	ld a, "─"
+	ld a, '─'
 	call .PlaceChars
-	ld [hl], "┘"
+	ld [hl], '┘'
 	ret
 
 .PlaceChars::
@@ -51,7 +51,7 @@ PlaceString::
 
 PlaceNextChar::
 	ld a, [de]
-	cp "@"
+	cp '@'
 	jr nz, .NotTerminator
 	ld b, h
 	ld c, l
@@ -59,7 +59,7 @@ PlaceNextChar::
 	ret
 
 .NotTerminator
-	cp "<NEXT>"
+	cp '<NEXT>'
 	jr nz, .NotNext
 	ld bc, 2 * SCREEN_WIDTH
 	ldh a, [hUILayoutFlags]
@@ -73,7 +73,7 @@ PlaceNextChar::
 	jp NextChar
 
 .NotNext
-	cp "<LINE>"
+	cp '<LINE>'
 	jr nz, .NotLine
 	pop hl
 	hlcoord 1, 16
@@ -83,26 +83,26 @@ PlaceNextChar::
 .NotLine
 
 ; Check against a dictionary
-	dict "<NULL>",    NullChar
-	dict "<SCROLL>",  _ContTextNoPause
-	dict "<_CONT>",   _ContText
-	dict "<PARA>",    Paragraph
-	dict "<PAGE>",    PageChar
-	dict "<PLAYER>",  PrintPlayerName
-	dict "<RIVAL>",   PrintRivalName
-	dict "#",         PlacePOKe
-	dict "<PC>",      PCChar
-	dict "<ROCKET>",  RocketChar
-	dict "<TM>",      TMChar
-	dict "<TRAINER>", TrainerChar
-	dict "<CONT>",    ContText
-	dict "<……>",      SixDotsChar
-	dict "<DONE>",    DoneText
-	dict "<PROMPT>",  PromptText
-	dict "<PKMN>",    PlacePKMN
-	dict "<DEXEND>",  PlaceDexEnd
-	dict "<TARGET>",  PlaceMoveTargetsName
-	dict "<USER>",    PlaceMoveUsersName
+	dict '<NULL>',    NullChar
+	dict '<SCROLL>',  _ContTextNoPause
+	dict '<_CONT>',   _ContText
+	dict '<PARA>',    Paragraph
+	dict '<PAGE>',    PageChar
+	dict '<PLAYER>',  PrintPlayerName
+	dict '<RIVAL>',   PrintRivalName
+	dict '#',         PlacePOKe
+	dict '<PC>',      PCChar
+	dict '<ROCKET>',  RocketChar
+	dict '<TM>',      TMChar
+	dict '<TRAINER>', TrainerChar
+	dict '<CONT>',    ContText
+	dict '<……>',      SixDotsChar
+	dict '<DONE>',    DoneText
+	dict '<PROMPT>',  PromptText
+	dict '<PKMN>',    PlacePKMN
+	dict '<DEXEND>',  PlaceDexEnd
+	dict '<TARGET>',  PlaceMoveTargetsName
+	dict '<USER>',    PlaceMoveUsersName
 
 	ld [hli], a
 	call PrintLetterDelay
@@ -202,7 +202,7 @@ ContCharText::
 	text_end
 
 PlaceDexEnd::
-	ld [hl], "."
+	ld [hl], '.'
 	pop hl
 	ret
 
@@ -210,12 +210,12 @@ PromptText::
 	ld a, [wLinkState]
 	cp LINK_STATE_BATTLING
 	jp z, .ok
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16
 .ok
 	call ProtectedDelay3
 	call ManualTextScroll
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 18, 16
 
 DoneText::
@@ -229,7 +229,7 @@ DoneText::
 
 Paragraph::
 	push de
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16
 	call ProtectedDelay3
 	call ManualTextScroll
@@ -244,7 +244,7 @@ Paragraph::
 
 PageChar::
 	push de
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16
 	call ProtectedDelay3
 	call ManualTextScroll
@@ -260,13 +260,13 @@ PageChar::
 	jp NextChar
 
 _ContText::
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16
 	call ProtectedDelay3
 	push de
 	call ManualTextScroll
 	pop de
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 18, 16
 _ContTextNoPause::
 	push de
@@ -291,7 +291,7 @@ ScrollTextUpOneLine::
 	dec b
 	jr nz, .copyText
 	hlcoord 1, 16
-	ld a, " "
+	ld a, ' '
 	ld b, SCREEN_WIDTH - 2
 .clearText
 	ld [hli], a
@@ -436,12 +436,12 @@ TextCommand_PROMPT_BUTTON::
 	ld a, [wLinkState]
 	cp LINK_STATE_BATTLING
 	jp z, TextCommand_WAIT_BUTTON
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16 ; place down arrow in lower right corner of dialogue text box
 	push bc
 	call ManualTextScroll ; blink arrow and wait for A or B to be pressed
 	pop bc
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 18, 16 ; overwrite down arrow with blank space
 	pop hl
 	jp NextTextCommand
@@ -449,7 +449,7 @@ TextCommand_PROMPT_BUTTON::
 TextCommand_SCROLL::
 ; pushes text up two lines and sets the BC cursor to the border tile
 ; below the first character column of the text box.
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 18, 16 ; place blank space in lower right corner of dialogue text box
 	call ScrollTextUpOneLine
 	call ScrollTextUpOneLine
@@ -564,7 +564,7 @@ TextCommand_DOTS::
 	ld l, c
 
 .loop
-	ld a, "…"
+	ld a, '…'
 	ld [hli], a
 	push de
 	call Joypad
diff --git a/home/vcopy.asm b/home/vcopy.asm
index e4ba2cdb..8ae9484a 100644
--- a/home/vcopy.asm
+++ b/home/vcopy.asm
@@ -19,7 +19,7 @@ GetRowColAddressBgMap::
 ; clears a VRAM background map with blank space tiles
 ; INPUT: h - high byte of background tile map address in VRAM
 ClearBgMap::
-	ld a, " "
+	ld a, ' '
 	jr .next
 	ld a, l
 .next
diff --git a/home/window.asm b/home/window.asm
index 48bef77a..6885a138 100644
--- a/home/window.asm
+++ b/home/window.asm
@@ -151,7 +151,7 @@ PlaceMenuCursor::
 	jr nz, .oldMenuItemLoop
 .checkForArrow1
 	ld a, [hl]
-	cp "▶" ; was an arrow next to the previously selected menu item?
+	cp '▶' ; was an arrow next to the previously selected menu item?
 	jr nz, .skipClearingArrow
 .clearArrow
 	ld a, [wTileBehindCursor]
@@ -177,11 +177,11 @@ PlaceMenuCursor::
 	jr nz, .currentMenuItemLoop
 .checkForArrow2
 	ld a, [hl]
-	cp "▶" ; has the right arrow already been placed?
+	cp '▶' ; has the right arrow already been placed?
 	jr z, .skipSavingTile ; if so, don't lose the saved tile
 	ld [wTileBehindCursor], a ; save tile before overwriting with right arrow
 .skipSavingTile
-	ld a, "▶" ; place right arrow
+	ld a, '▶' ; place right arrow
 	ld [hl], a
 	ld a, l
 	ld [wMenuCursorLocation], a
@@ -201,7 +201,7 @@ PlaceUnfilledArrowMenuCursor::
 	ld l, a
 	ld a, [wMenuCursorLocation + 1]
 	ld h, a
-	ld [hl], "▷"
+	ld [hl], '▷'
 	ld a, b
 	ret
 
@@ -211,7 +211,7 @@ EraseMenuCursor::
 	ld l, a
 	ld a, [wMenuCursorLocation + 1]
 	ld h, a
-	ld [hl], " "
+	ld [hl], ' '
 	ret
 
 ; This toggles a blinking down arrow at hl on and off after a delay has passed.
@@ -225,7 +225,7 @@ EraseMenuCursor::
 HandleDownArrowBlinkTiming::
 	ld a, [hl]
 	ld b, a
-	ld a, "▼"
+	ld a, '▼'
 	cp b
 	jr nz, .downArrowOff
 .downArrowOn
@@ -237,7 +237,7 @@ HandleDownArrowBlinkTiming::
 	dec a
 	ldh [hDownArrowBlinkCount2], a
 	ret nz
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 	ld a, $ff
 	ldh [hDownArrowBlinkCount1], a
@@ -259,7 +259,7 @@ HandleDownArrowBlinkTiming::
 	ret nz
 	ld a, $06
 	ldh [hDownArrowBlinkCount2], a
-	ld a, "▼"
+	ld a, '▼'
 	ld [hl], a
 	ret
 
diff --git a/macros/asserts.asm b/macros/asserts.asm
index 7b41a654..e2de1505 100644
--- a/macros/asserts.asm
+++ b/macros/asserts.asm
@@ -1,18 +1,14 @@
 ; Macros to verify assumptions about the data or code
 
-MACRO _redef_current_label
+MACRO? _redef_current_label
 	IF DEF(\1)
 		PURGE \1
 	ENDC
 	IF _NARG == 3 + (\3)
 		DEF \1 EQUS "\<_NARG>"
-	ELIF DEF(..)
-		IF .. - @ == 0
-			DEF \1 EQUS "{..}"
-		ENDC
-	ELIF DEF(.)
-		if . - @ == 0
-			DEF \1 EQUS "{.}"
+	ELIF STRLEN(#__SCOPE__)
+		IF {{__SCOPE__}} - @ == 0
+			DEF \1 EQUS #{__SCOPE__}
 		ENDC
 	ENDC
 	if !DEF(\1)
@@ -21,12 +17,12 @@ MACRO _redef_current_label
 	ENDC
 ENDM
 
-MACRO table_width
+MACRO? table_width
 	DEF CURRENT_TABLE_WIDTH = \1
 	_redef_current_label CURRENT_TABLE_START, "._table_width\@", 2, \#
 ENDM
 
-MACRO assert_table_length
+MACRO? assert_table_length
 	DEF w = \1
 	DEF x = w * CURRENT_TABLE_WIDTH
 	DEF y = @ - {CURRENT_TABLE_START}
@@ -34,7 +30,7 @@ MACRO assert_table_length
 		"bytes, for {d:x} total; but got {d:y} bytes"
 ENDM
 
-MACRO assert_max_table_length
+MACRO? assert_max_table_length
 	DEF w = \1
 	DEF x = w * CURRENT_TABLE_WIDTH
 	DEF y = @ - {CURRENT_TABLE_START}
@@ -42,24 +38,24 @@ MACRO assert_max_table_length
 		"{d:CURRENT_TABLE_WIDTH} bytes, for maximum {d:x} total; but got {d:y} bytes"
 ENDM
 
-MACRO list_start
+MACRO? list_start
 	DEF list_index = 0
 	_redef_current_label CURRENT_LIST_START, "._list_start\@", 1, \#
 ENDM
 
-MACRO li
+MACRO? li
 	ASSERT STRFIND(\1, "@") == -1, "String terminator \"@\" in list entry: \1"
 	db \1, "@"
 	DEF list_index += 1
 ENDM
 
-MACRO assert_list_length
+MACRO? assert_list_length
 	DEF x = \1
 	ASSERT x == list_index, \
 		"{CURRENT_LIST_START}: expected {d:x} entries, got {d:list_index}"
 ENDM
 
-MACRO nybble_array
+MACRO? nybble_array
 	DEF CURRENT_NYBBLE_ARRAY_VALUE = 0
 	DEF CURRENT_NYBBLE_ARRAY_LENGTH = 0
 	IF _NARG == 1
@@ -70,7 +66,7 @@ MACRO nybble_array
 	ENDC
 ENDM
 
-MACRO nybble
+MACRO? nybble
 	ASSERT 0 <= (\1) && (\1) < $10, "nybbles must be 0-15"
 	DEF CURRENT_NYBBLE_ARRAY_VALUE = (\1) | (CURRENT_NYBBLE_ARRAY_VALUE << 4)
 	DEF CURRENT_NYBBLE_ARRAY_LENGTH += 1
@@ -80,7 +76,7 @@ MACRO nybble
 	ENDC
 ENDM
 
-MACRO end_nybble_array
+MACRO? end_nybble_array
 	IF CURRENT_NYBBLE_ARRAY_LENGTH % 2
 		db CURRENT_NYBBLE_ARRAY_VALUE << 4
 	ENDC
@@ -94,7 +90,7 @@ MACRO end_nybble_array
 	ENDC
 ENDM
 
-MACRO bit_array
+MACRO? bit_array
 	DEF CURRENT_BIT_ARRAY_VALUE = 0
 	DEF CURRENT_BIT_ARRAY_LENGTH = 0
 	IF _NARG == 1
@@ -105,7 +101,7 @@ MACRO bit_array
 	ENDC
 ENDM
 
-MACRO dbit
+MACRO? dbit
 	ASSERT (\1) == 0 || (\1) == 1, "bits must be 0 or 1"
 	DEF CURRENT_BIT_ARRAY_VALUE |= (\1) << (CURRENT_BIT_ARRAY_LENGTH % 8)
 	DEF CURRENT_BIT_ARRAY_LENGTH += 1
@@ -115,7 +111,7 @@ MACRO dbit
 	ENDC
 ENDM
 
-MACRO end_bit_array
+MACRO? end_bit_array
 	IF CURRENT_BIT_ARRAY_LENGTH % 8
 		db CURRENT_BIT_ARRAY_VALUE
 	ENDC
@@ -129,7 +125,7 @@ MACRO end_bit_array
 	ENDC
 ENDM
 
-MACRO def_grass_wildmons
+MACRO? def_grass_wildmons
 ;\1: encounter rate
 	DEF CURRENT_GRASS_WILDMONS_RATE = \1
 	REDEF CURRENT_GRASS_WILDMONS_LABEL EQUS "._def_grass_wildmons_\1"
@@ -137,7 +133,7 @@ MACRO def_grass_wildmons
 	db \1
 ENDM
 
-MACRO end_grass_wildmons
+MACRO? end_grass_wildmons
 	DEF x = @ - {CURRENT_GRASS_WILDMONS_LABEL}
 	IF CURRENT_GRASS_WILDMONS_RATE == 0
 		ASSERT 1 == x, \
@@ -148,7 +144,7 @@ MACRO end_grass_wildmons
 	ENDC
 ENDM
 
-MACRO def_water_wildmons
+MACRO? def_water_wildmons
 ;\1: encounter rate
 	DEF CURRENT_WATER_WILDMONS_RATE = \1
 	REDEF CURRENT_WATER_WILDMONS_LABEL EQUS "._def_water_wildmons_\1"
@@ -156,7 +152,7 @@ MACRO def_water_wildmons
 	db \1
 ENDM
 
-MACRO end_water_wildmons
+MACRO? end_water_wildmons
 	DEF x = @ - {CURRENT_WATER_WILDMONS_LABEL}
 	IF CURRENT_WATER_WILDMONS_RATE == 0
 		ASSERT 1 == x, \
diff --git a/macros/code.asm b/macros/code.asm
index 3c65e100..c972f97e 100644
--- a/macros/code.asm
+++ b/macros/code.asm
@@ -1,10 +1,10 @@
 ; Syntactic sugar macros
 
-MACRO lb ; r, hi, lo
+MACRO? lb ; r, hi, lo
 	ld \1, ((\2) & $ff) << 8 + ((\3) & $ff)
 ENDM
 
-MACRO ldpal
+MACRO? ldpal
 	ld \1, \2 << 6 | \3 << 4 | \4 << 2 | \5
 ENDM
 
diff --git a/macros/const.asm b/macros/const.asm
index fa2f0753..d6a34672 100644
--- a/macros/const.asm
+++ b/macros/const.asm
@@ -1,6 +1,6 @@
 ; Enumerate constants
 
-MACRO const_def
+MACRO? const_def
 	IF _NARG >= 1
 		DEF const_value = \1
 	ELSE
@@ -13,22 +13,22 @@ MACRO const_def
 	ENDC
 ENDM
 
-MACRO const
+MACRO? const
 	DEF \1 EQU const_value
 	DEF const_value += const_inc
 ENDM
 
-MACRO const_export
+MACRO? const_export
 	const \1
 	EXPORT \1
 ENDM
 
-MACRO shift_const
+MACRO? shift_const
 	DEF \1 EQU 1 << const_value
 	DEF const_value += const_inc
 ENDM
 
-MACRO const_skip
+MACRO? const_skip
 	if _NARG >= 1
 		DEF const_value += const_inc * (\1)
 	else
@@ -36,7 +36,7 @@ MACRO const_skip
 	endc
 ENDM
 
-MACRO const_next
+MACRO? const_next
 	if (const_value > 0 && \1 < const_value) || (const_value < 0 && \1 > const_value)
 		fail "const_next cannot go backwards from {const_value} to \1"
 	else
@@ -44,12 +44,12 @@ MACRO const_next
 	endc
 ENDM
 
-MACRO dw_const
+MACRO? dw_const
 	dw \1
 	const \2
 ENDM
 
-MACRO rb_skip
+MACRO? rb_skip
 	IF _NARG == 1
 		rsset _RS + \1
 	ELSE
diff --git a/macros/coords.asm b/macros/coords.asm
index 6eccdec4..4f801d01 100644
--- a/macros/coords.asm
+++ b/macros/coords.asm
@@ -1,4 +1,4 @@
-MACRO validate_coords
+MACRO? validate_coords
 	IF _NARG >= 4
 		IF \1 >= \3
 			fail "x coord out of range"
@@ -11,19 +11,19 @@ MACRO validate_coords
 	ENDC
 ENDM
 
-MACRO hlcoord
+MACRO? hlcoord
 	coord hl, \#
 ENDM
 
-MACRO bccoord
+MACRO? bccoord
 	coord bc, \#
 ENDM
 
-MACRO decoord
+MACRO? decoord
 	coord de, \#
 ENDM
 
-MACRO coord
+MACRO? coord
 ; register, x, y[, origin]
 	validate_coords \2, \3
 	IF _NARG >= 4
@@ -33,19 +33,19 @@ MACRO coord
 	ENDC
 ENDM
 
-MACRO hlbgcoord
+MACRO? hlbgcoord
 	bgcoord hl, \#
 ENDM
 
-MACRO bcbgcoord
+MACRO? bcbgcoord
 	bgcoord bc, \#
 ENDM
 
-MACRO debgcoord
+MACRO? debgcoord
 	bgcoord de, \#
 ENDM
 
-MACRO bgcoord
+MACRO? bgcoord
 ; register, x, y[, origin]
 	validate_coords \2, \3, TILEMAP_WIDTH, TILEMAP_HEIGHT
 	IF _NARG >= 4
@@ -55,30 +55,30 @@ MACRO bgcoord
 	ENDC
 ENDM
 
-MACRO hlowcoord
+MACRO? hlowcoord
 	owcoord hl, \#
 ENDM
 
-MACRO bcowcoord
+MACRO? bcowcoord
 	owcoord bc, \#
 ENDM
 
-MACRO deowcoord
+MACRO? deowcoord
 	owcoord de, \#
 ENDM
 
-MACRO owcoord
+MACRO? owcoord
 ; register, x, y, map width
 	ld \1, wOverworldMap + ((\2) + 3) + (((\3) + 3) * ((\4) + (3 * 2)))
 ENDM
 
-MACRO event_displacement
+MACRO? event_displacement
 ; map width, x blocks, y blocks
 	dw (wOverworldMap + 7 + (\1) + ((\1) + 6) * ((\3) >> 1) + ((\2) >> 1))
 	db \3, \2
 ENDM
 
-MACRO dwcoord
+MACRO? dwcoord
 ; x, y
 	validate_coords \1, \2
 	IF _NARG >= 3
@@ -88,7 +88,7 @@ MACRO dwcoord
 	ENDC
 ENDM
 
-MACRO ldcoord_a
+MACRO? ldcoord_a
 ; x, y[, origin]
 	validate_coords \1, \2
 	IF _NARG >= 3
@@ -98,7 +98,7 @@ MACRO ldcoord_a
 	ENDC
 ENDM
 
-MACRO lda_coord
+MACRO? lda_coord
 ; x, y[, origin]
 	validate_coords \1, \2
 	IF _NARG >= 3
@@ -108,7 +108,7 @@ MACRO lda_coord
 	ENDC
 ENDM
 
-MACRO dbmapcoord
+MACRO? dbmapcoord
 ; x, y
 	db \2, \1
 ENDM
diff --git a/macros/data.asm b/macros/data.asm
index c945a21d..feb8f1b8 100644
--- a/macros/data.asm
+++ b/macros/data.asm
@@ -2,19 +2,19 @@
 
 DEF percent EQUS "* $ff / 100"
 
-MACRO bcd2
+MACRO? bcd2
 	dn ((\1) / 1000) % 10, ((\1) / 100) % 10
 	dn ((\1) / 10) % 10, (\1) % 10
 ENDM
 
-MACRO bcd3
+MACRO? bcd3
 	dn ((\1) / 100000) % 10, ((\1) / 10000) % 10
 	dn ((\1) / 1000) % 10, ((\1) / 100) % 10
 	dn ((\1) / 10) % 10, (\1) % 10
 ENDM
 
 ; used in data/pokemon/base_stats/*.asm
-MACRO tmhm
+MACRO? tmhm
 	; initialize bytes to 0
 	FOR n, (NUM_TM_HM + 7) / 8
 		DEF _tm{d:n} = 0
@@ -40,49 +40,49 @@ ENDM
 
 ; Constant data (db, dw, dl) macros
 
-MACRO dbw
+MACRO? dbw
 	db \1
 	dw \2
 ENDM
 
-MACRO dwb
+MACRO? dwb
 	dw \1
 	db \2
 ENDM
 
-MACRO dn ; nybbles
+MACRO? dn ; nybbles
 	REPT _NARG / 2
 		db ((\1) << 4) | (\2)
 		SHIFT 2
 	ENDR
 ENDM
 
-MACRO dc ; "crumbs"
+MACRO? dc ; "crumbs"
 	REPT _NARG / 4
 		db ((\1) << 6) | ((\2) << 4) | ((\3) << 2) | (\4)
 		SHIFT 4
 	ENDR
 ENDM
 
-MACRO bigdw ; big-endian word
+MACRO? bigdw ; big-endian word
 	db HIGH(\1), LOW(\1)
 ENDM
 
-MACRO dba ; dbw bank, address
+MACRO? dba ; dbw bank, address
 	REPT _NARG
 		dbw BANK(\1), \1
 		SHIFT
 	ENDR
 ENDM
 
-MACRO dab ; dwb address, bank
+MACRO? dab ; dwb address, bank
 	REPT _NARG
 		dwb \1, BANK(\1)
 		SHIFT
 	ENDR
 ENDM
 
-MACRO dname
+MACRO? dname
 	IF _NARG == 2
 		DEF n = \2
 	ELSE
@@ -91,5 +91,5 @@ MACRO dname
 	ASSERT STRFIND(\1, "@") == -1, "String terminator \"@\" in name: \1"
 	ASSERT CHARLEN(\1) <= n, "Name longer than {d:n} characters: \1"
 	db \1
-	ds n - CHARLEN(\1), "@"
+	ds n - CHARLEN(\1), '@'
 ENDM
diff --git a/macros/gfx.asm b/macros/gfx.asm
index 8c02bcd7..817f8787 100644
--- a/macros/gfx.asm
+++ b/macros/gfx.asm
@@ -1,4 +1,4 @@
-MACRO RGB
+MACRO? RGB
 	REPT _NARG / 3
 		dw palred (\1) + palgreen (\2) + palblue (\3)
 		SHIFT 3
@@ -16,7 +16,7 @@ DEF color    EQUS "+ PAL_COLORS *"
 DEF tiles EQUS "* TILE_SIZE"
 DEF tile  EQUS "+ TILE_SIZE *"
 
-MACRO dbsprite
+MACRO? dbsprite
 ; x tile, y tile, x pixel, y pixel, vtile offset, attributes
 	db (\2 * TILE_WIDTH) % $100 + \4, (\1 * TILE_WIDTH) % $100 + \3, \5, \6
 ENDM
diff --git a/macros/predef.asm b/macros/predef.asm
index 45b0197b..efd692f1 100644
--- a/macros/predef.asm
+++ b/macros/predef.asm
@@ -1,32 +1,32 @@
-MACRO predef_id
+MACRO? predef_id
 	ld a, (\1Predef - PredefPointers) / 3
 ENDM
 
-MACRO predef
+MACRO? predef
 	predef_id \1
 	call Predef
 ENDM
 
-MACRO predef_jump
+MACRO? predef_jump
 	predef_id \1
 	jp Predef
 ENDM
 
 
-MACRO tx_pre_id
+MACRO? tx_pre_id
 	ld a, (\1_id - TextPredefs) / 2 + 1
 ENDM
 
-MACRO tx_pre
+MACRO? tx_pre
 	tx_pre_id \1
 	call PrintPredefTextID
 ENDM
 
-MACRO tx_pre_jump
+MACRO? tx_pre_jump
 	tx_pre_id \1
 	jp PrintPredefTextID
 ENDM
 
-MACRO db_tx_pre
+MACRO? db_tx_pre
 	db (\1_id - TextPredefs) / 2 + 1
 ENDM
diff --git a/macros/ram.asm b/macros/ram.asm
index 5f2b8a6f..61358434 100644
--- a/macros/ram.asm
+++ b/macros/ram.asm
@@ -1,6 +1,6 @@
 ; Used in wram.asm
 
-MACRO flag_array
+MACRO? flag_array
 	ds ((\1) + 7) / 8
 ENDM
 
diff --git a/macros/scripts/maps.asm b/macros/scripts/maps.asm
index 49150c6e..127a13ad 100644
--- a/macros/scripts/maps.asm
+++ b/macros/scripts/maps.asm
@@ -174,7 +174,7 @@ MACRO connection
 		DEF _tgt = 0
 	ENDC
 
-	IF !STRCMP("\1", "north")
+	IF "\1" === "north"
 		DEF _blk = \3_WIDTH * (\3_HEIGHT - 3) + _src
 		DEF _map = _tgt
 		DEF _win = (\3_WIDTH + 6) * \3_HEIGHT + 1
@@ -185,7 +185,7 @@ MACRO connection
 			DEF _len = \3_WIDTH
 		ENDC
 
-	ELIF !STRCMP("\1", "south")
+	ELIF "\1" === "south"
 		DEF _blk = _src
 		DEF _map = (CURRENT_MAP_WIDTH + 6) * (CURRENT_MAP_HEIGHT + 3) + _tgt
 		DEF _win = \3_WIDTH + 7
@@ -196,7 +196,7 @@ MACRO connection
 			DEF _len = \3_WIDTH
 		ENDC
 
-	ELIF !STRCMP("\1", "west")
+	ELIF "\1" === "west"
 		DEF _blk = (\3_WIDTH * _src) + \3_WIDTH - 3
 		DEF _map = (CURRENT_MAP_WIDTH + 6) * _tgt
 		DEF _win = (\3_WIDTH + 6) * 2 - 6
@@ -207,7 +207,7 @@ MACRO connection
 			DEF _len = \3_HEIGHT
 		ENDC
 
-	ELIF !STRCMP("\1", "east")
+	ELIF "\1" === "east"
 		DEF _blk = (\3_WIDTH * _src)
 		DEF _map = (CURRENT_MAP_WIDTH + 6) * _tgt + CURRENT_MAP_WIDTH + 3
 		DEF _win = \3_WIDTH + 7
diff --git a/macros/vc.asm b/macros/vc.asm
index 0990e988..bc0734aa 100644
--- a/macros/vc.asm
+++ b/macros/vc.asm
@@ -1,22 +1,22 @@
-MACRO vc_hook
+MACRO? vc_hook
 	IF DEF(_RED_VC) || DEF(_BLUE_VC)
 	.VC_\1::
 	ENDC
 ENDM
 
-MACRO vc_hook_red
+MACRO? vc_hook_red
 	IF DEF(_RED_VC)
 	.VC_\1::
 	ENDC
 ENDM
 
-MACRO vc_hook_blue
+MACRO? vc_hook_blue
 	IF DEF(_BLUE_VC)
 	.VC_\1::
 	ENDC
 ENDM
 
-MACRO vc_patch
+MACRO? vc_patch
 	IF DEF(_RED_VC) || DEF(_BLUE_VC)
 		ASSERT !DEF(CURRENT_VC_PATCH), "Already started a vc_patch"
 		DEF CURRENT_VC_PATCH EQUS "\1"
@@ -24,7 +24,7 @@ MACRO vc_patch
 	ENDC
 ENDM
 
-MACRO vc_patch_end
+MACRO? vc_patch_end
 	IF DEF(_RED_VC) || DEF(_BLUE_VC)
 		ASSERT DEF(CURRENT_VC_PATCH), "No vc_patch started"
 	.VC_{CURRENT_VC_PATCH}_End::
@@ -32,7 +32,7 @@ MACRO vc_patch_end
 	ENDC
 ENDM
 
-MACRO vc_assert
+MACRO? vc_assert
 	IF DEF(_RED_VC) || DEF(_BLUE_VC)
 		ASSERT \#
 	ENDC
diff --git a/rgbdscheck.asm b/rgbdscheck.asm
index 4198765b..0ba32a29 100644
--- a/rgbdscheck.asm
+++ b/rgbdscheck.asm
@@ -1,6 +1,6 @@
-IF !DEF(__RGBDS_MAJOR__) || !DEF(__RGBDS_MINOR__) || !DEF(__RGBDS_PATCH__)
-	fail "pokered requires rgbds v0.9.3 or newer."
+IF !DEF(__RGBDS_MAJOR__)
+	fail "pokered requires rgbds v1.0.0 or newer."
 ENDC
-IF __RGBDS_MAJOR__ == 0 && (__RGBDS_MINOR__ < 9 || (__RGBDS_MINOR__ == 9 && __RGBDS_PATCH__ < 3))
-	fail "pokered requires rgbds v0.9.3 or newer."
+IF __RGBDS_MAJOR__ < 1
+	fail "pokered requires rgbds v1.0.0 or newer."
 ENDC
diff --git a/scripts/Route23.asm b/scripts/Route23.asm
index e2a66c4e..911a2ef3 100644
--- a/scripts/Route23.asm
+++ b/scripts/Route23.asm
@@ -86,7 +86,7 @@ Route23CopyBadgeTextScript:
 	ld a, [hli]
 	ld [de], a
 	inc de
-	cp "@"
+	cp '@'
 	jr nz, .copyTextLoop
 	ret
 
diff --git a/vc/pokeblue.constants.asm b/vc/pokeblue.constants.asm
index e55bcca0..1622a41d 100644
--- a/vc/pokeblue.constants.asm
+++ b/vc/pokeblue.constants.asm
@@ -1,32 +1,32 @@
 ; These are all the asm constants needed to make the blue_vc patch.
 
 ; [FPA 001 Begin]
-EXPORT DEF M_CHAR EQU "M"
-EXPORT DEF E_CHAR EQU "E"
-EXPORT DEF G_CHAR EQU "G"
-EXPORT DEF A_CHAR EQU "A"
-EXPORT DEF P_CHAR EQU "P"
-EXPORT DEF S_CHAR EQU "S"
-EXPORT DEF L_CHAR EQU "L"
-EXPORT DEF F_CHAR EQU "F"
-EXPORT DEF X_CHAR EQU "X"
+EXPORT DEF M_CHAR EQU 'M'
+EXPORT DEF E_CHAR EQU 'E'
+EXPORT DEF G_CHAR EQU 'G'
+EXPORT DEF A_CHAR EQU 'A'
+EXPORT DEF P_CHAR EQU 'P'
+EXPORT DEF S_CHAR EQU 'S'
+EXPORT DEF L_CHAR EQU 'L'
+EXPORT DEF F_CHAR EQU 'F'
+EXPORT DEF X_CHAR EQU 'X'
 EXPORT MEGA_PUNCH
 
 ; [FPA 001 End]
 EXPORT EXPLOSION
 
 ; [FPA 002 Begin]
-EXPORT DEF U_CHAR EQU "U"
-EXPORT DEF I_CHAR EQU "I"
+EXPORT DEF U_CHAR EQU 'U'
+EXPORT DEF I_CHAR EQU 'I'
 EXPORT GUILLOTINE
 
 ; [FPA 002 End]
-EXPORT DEF K_CHAR EQU "K"
+EXPORT DEF K_CHAR EQU 'K'
 EXPORT MEGA_KICK
 
 ; [FPA 004 Begin]
-EXPORT DEF B_CHAR EQU "B"
-EXPORT DEF Z_CHAR EQU "Z"
+EXPORT DEF B_CHAR EQU 'B'
+EXPORT DEF Z_CHAR EQU 'Z'
 EXPORT BLIZZARD
 
 ; [FPA 005 Begin]
@@ -36,29 +36,29 @@ EXPORT BUBBLEBEAM
 EXPORT HYPER_BEAM
 
 ; [FPA 006 Begin]
-EXPORT DEF H_CHAR EQU "H"
-EXPORT DEF Y_CHAR EQU "Y"
+EXPORT DEF H_CHAR EQU 'H'
+EXPORT DEF Y_CHAR EQU 'Y'
 
 ; [FPA 007 Begin]
-EXPORT DEF T_CHAR EQU "T"
-EXPORT DEF N_CHAR EQU "N"
+EXPORT DEF T_CHAR EQU 'T'
+EXPORT DEF N_CHAR EQU 'N'
 EXPORT THUNDERBOLT
 
 ; [FPA 008 Begin]
-EXPORT DEF R_CHAR EQU "R"
+EXPORT DEF R_CHAR EQU 'R'
 EXPORT REFLECT
 
 ; [FPA 009 Begin]
 EXPORT SELFDESTRUCT
 
 ; [FPA 010 Begin]
-EXPORT DEF D_CHAR EQU "D"
+EXPORT DEF D_CHAR EQU 'D'
 EXPORT DREAM_EATER
 
 ; [FPA 011 Begin]
-EXPORT DEF O_CHAR EQU "O"
+EXPORT DEF O_CHAR EQU 'O'
 EXPORT SPORE
 
 ; [FPA 012 Begin]
-EXPORT DEF C_CHAR EQU "C"
+EXPORT DEF C_CHAR EQU 'C'
 EXPORT ROCK_SLIDE
diff --git a/vc/pokered.constants.asm b/vc/pokered.constants.asm
index aec40f11..a4b8ca24 100644
--- a/vc/pokered.constants.asm
+++ b/vc/pokered.constants.asm
@@ -1,58 +1,58 @@
 ; These are all the asm constants needed to make the red_vc patch.
 
 ; [FPA 001 Begin]
-EXPORT DEF M_CHAR EQU "M"
-EXPORT DEF E_CHAR EQU "E"
-EXPORT DEF G_CHAR EQU "G"
-EXPORT DEF A_CHAR EQU "A"
-EXPORT DEF P_CHAR EQU "P"
-EXPORT DEF S_CHAR EQU "S"
-EXPORT DEF L_CHAR EQU "L"
-EXPORT DEF F_CHAR EQU "F"
-EXPORT DEF D_CHAR EQU "D"
-EXPORT DEF X_CHAR EQU "X"
+EXPORT DEF M_CHAR EQU 'M'
+EXPORT DEF E_CHAR EQU 'E'
+EXPORT DEF G_CHAR EQU 'G'
+EXPORT DEF A_CHAR EQU 'A'
+EXPORT DEF P_CHAR EQU 'P'
+EXPORT DEF S_CHAR EQU 'S'
+EXPORT DEF L_CHAR EQU 'L'
+EXPORT DEF F_CHAR EQU 'F'
+EXPORT DEF D_CHAR EQU 'D'
+EXPORT DEF X_CHAR EQU 'X'
 EXPORT MEGA_PUNCH
 
 ; [FPA 002 Begin]
-EXPORT DEF U_CHAR EQU "U"
-EXPORT DEF I_CHAR EQU "I"
+EXPORT DEF U_CHAR EQU 'U'
+EXPORT DEF I_CHAR EQU 'I'
 EXPORT GUILLOTINE
 
 ; [FPA 003 Begin]
-EXPORT DEF K_CHAR EQU "K"
+EXPORT DEF K_CHAR EQU 'K'
 EXPORT MEGA_KICK
 
 ; [FPA 004 Begin]
-EXPORT DEF B_CHAR EQU "B"
+EXPORT DEF B_CHAR EQU 'B'
 EXPORT BUBBLEBEAM
 
 ; [FPA 005 Begin]
-EXPORT DEF H_CHAR EQU "H"
-EXPORT DEF Y_CHAR EQU "Y"
+EXPORT DEF H_CHAR EQU 'H'
+EXPORT DEF Y_CHAR EQU 'Y'
 EXPORT HYPER_BEAM
 
 ; [FPA 006 Begin]
-EXPORT DEF T_CHAR EQU "T"
-EXPORT DEF N_CHAR EQU "N"
+EXPORT DEF T_CHAR EQU 'T'
+EXPORT DEF N_CHAR EQU 'N'
 EXPORT THUNDERBOLT
 
 ; [FPA 007 Begin]
-EXPORT DEF R_CHAR EQU "R"
+EXPORT DEF R_CHAR EQU 'R'
 EXPORT REFLECT
 
 ; [FPA 008 Begin]
 EXPORT DREAM_EATER
 
 ; [FPA 008 End]
-EXPORT DEF Z_CHAR EQU "Z"
+EXPORT DEF Z_CHAR EQU 'Z'
 EXPORT BLIZZARD
 
 ; [FPA 009 Begin]
-EXPORT DEF O_CHAR EQU "O"
+EXPORT DEF O_CHAR EQU 'O'
 EXPORT SPORE
 
 ; [FPA 010 Begin]
-EXPORT DEF C_CHAR EQU "C"
+EXPORT DEF C_CHAR EQU 'C'
 EXPORT ROCK_SLIDE
 
 ; [FPA 010 End]