diff --git a/README.md b/README.md
index ecaa38a..ba98944 100644
--- a/README.md
+++ b/README.md
@@ -31,10 +31,10 @@ Begin by building the assembler and emulator by running the build script. The as
 ./build.sh
 ```
 
-The following command will create an Uxn-compatible rom from an [uxambly file](https://wiki.xxiivv.com/site/uxambly.html), point to a different usm file in `/projects` to assemble a different rom. 
+The following command will create an Uxn-compatible rom from an [uxntal file](https://wiki.xxiivv.com/site/uxntal.html), point to a different .tal file in `/projects` to assemble a different rom. 
 
 ```
-bin/uxnasm projects/examples/demos/life.usm bin/life.rom
+bin/uxnasm projects/examples/demos/life.tal bin/life.rom
 ```
 
 To start the rom, point the emulator to the newly created rom:
diff --git a/build.sh b/build.sh
index 1073164..659ce27 100755
--- a/build.sh
+++ b/build.sh
@@ -43,7 +43,7 @@ then
 fi
 
 echo "Assembling.."
-./bin/uxnasm projects/examples/demos/piano.usm bin/piano.rom
+./bin/uxnasm projects/examples/demos/piano.tal bin/piano.rom
 
 echo "Running.."
 ./bin/uxnemu bin/piano.rom
diff --git a/etc/asma-test.sh b/etc/asma-test.sh
index dc9655d..7632318 100755
--- a/etc/asma-test.sh
+++ b/etc/asma-test.sh
@@ -6,22 +6,22 @@ mkdir asma-test
 cd asma-test
 
 build_asma() {
-    sed -ne '/^( devices )/,/^( vectors )/p' ../projects/software/asma.usm
+    sed -ne '/^( devices )/,/^( vectors )/p' ../projects/software/asma.tal
     cat <<EOD
 |0100 @reset
 	;&source-file ;&dest-file ;asma-assemble-file JSR2
 	;asma/error LDA2 #0000 NEQ2 JMP BRK
 	#0000 DIV
 
-	&source-file "in.usm 00
+	&source-file "in.tal 00
 	&dest-file "out.rom 00
 
 EOD
-	sed -ne '/%asma-IF-ERROR/,$p' ../projects/software/asma.usm
+	sed -ne '/%asma-IF-ERROR/,$p' ../projects/software/asma.tal
 }
 
 expect_failure() {
-    cat > 'in.usm'
+    cat > 'in.tal'
     if ../bin/uxncli asma.rom > asma.log 2>/dev/null || ! grep -qF "${1}" asma.log; then
         echo "error: asma didn't report error ${1} in faulty code"
 		tail asma.log
@@ -30,11 +30,11 @@ expect_failure() {
 }
 
 echo 'Assembling asma with uxnasm'
-build_asma > asma.usm
-../bin/uxnasm asma.usm asma.rom > uxnasm.log
-find ../projects -type f -name '*.usm' -not -name 'blank.usm' | sort | while read F; do
+build_asma > asma.tal
+../bin/uxnasm asma.tal asma.rom > uxnasm.log
+find ../projects -type f -name '*.tal' -not -name 'blank.tal' | sort | while read F; do
 	echo "Comparing assembly of ${F}"
-	BN="$(basename "${F%.usm}")"
+	BN="$(basename "${F%.tal}")"
 
 	if ! ../bin/uxnasm "${F}" "uxnasm-${BN}.rom" > uxnasm.log; then
 		echo "error: uxnasm failed to assemble ${F}"
@@ -43,7 +43,7 @@ find ../projects -type f -name '*.usm' -not -name 'blank.usm' | sort | while rea
 	fi
 	xxd "uxnasm-${BN}.rom" > "uxnasm-${BN}.hex"
 
-	cp "${F}" 'in.usm'
+	cp "${F}" 'in.tal'
 	if ! ../bin/uxncli asma.rom > asma.log; then
 		echo "error: asma failed to assemble ${F}, while uxnasm succeeded"
 		tail asma.log
diff --git a/etc/asma.lua b/etc/asma.lua
index 015b411..05113ab 100644
--- a/etc/asma.lua
+++ b/etc/asma.lua
@@ -147,8 +147,8 @@ fmt = function(...)
   return (('\t%-11s %-10s %-12s %-14s %s '):format(...):gsub(' +$', '\n'))
 end
 do
-  local _with_0 = assert(io.open('projects/software/asma.usm.tmp', 'w'))
-  for l in assert(io.lines('projects/software/asma.usm')) do
+  local _with_0 = assert(io.open('projects/software/asma.tal.tmp', 'w'))
+  for l in assert(io.lines('projects/software/asma.tal')) do
     if l:match('--- cut here ---') then
       break
     end
@@ -228,4 +228,4 @@ do
 ]])
   _with_0:close()
 end
-return os.execute('mv projects/software/asma.usm.tmp projects/software/asma.usm')
+return os.execute('mv projects/software/asma.tal.tmp projects/software/asma.tal')
diff --git a/etc/asma.moon b/etc/asma.moon
index 54a23e6..30cfcd0 100644
--- a/etc/asma.moon
+++ b/etc/asma.moon
@@ -1,7 +1,7 @@
 --
 -- Asma tree helper script
 --
--- This script updates the trees at the end of projects/software/asma.usm when
+-- This script updates the trees at the end of projects/software/asma.tal when
 -- Uxn's opcode set changes or new runes (first character of tokens) are
 -- created, so that new changes in the C assembler can be incorporated rapidly
 -- into asma.
@@ -122,8 +122,8 @@ printout = true
 fmt = (...) ->
 	('\t%-11s %-10s %-12s %-14s %s '\format(...)\gsub ' +$', '\n')
 
-with assert io.open 'projects/software/asma.usm.tmp', 'w'
-	for l in assert io.lines 'projects/software/asma.usm'
+with assert io.open 'projects/software/asma.tal.tmp', 'w'
+	for l in assert io.lines 'projects/software/asma.tal'
 		if l\match '--- cut here ---'
 			break
 		\write l
@@ -193,5 +193,5 @@ with assert io.open 'projects/software/asma.usm.tmp', 'w'
 
 ]]
 	\close!
-os.execute 'mv projects/software/asma.usm.tmp projects/software/asma.usm'
+os.execute 'mv projects/software/asma.tal.tmp projects/software/asma.tal'
 
diff --git a/etc/usm.sublime-syntax b/etc/usm.sublime-syntax
index e75774e..7f02ccb 100644
--- a/etc/usm.sublime-syntax
+++ b/etc/usm.sublime-syntax
@@ -2,11 +2,11 @@
 ---
 # See http://www.sublimetext.com/docs/3/syntax.html
 name: Uxn Assembly
-scopeName: usm.
-fileTypes: [usm]
+scopeName: tal.
+fileTypes: [tal]
 file_extensions:
-  - usm
-scope: source.usm
+  - tal
+scope: source.tal
 
 contexts:
   main:
diff --git a/etc/uxambly-translate.moon b/etc/uxambly-translate.moon
index 5487873..04a7578 100644
--- a/etc/uxambly-translate.moon
+++ b/etc/uxambly-translate.moon
@@ -1,4 +1,4 @@
--- Used for porting Uxambly code for use with the old assembler
+-- Used for porting Uxntal code for use with the old assembler
 -- in commit 82f7103a55c21b13f898b20e5d1e174e501bc825 with the
 -- assembler that replaced it straight afterwards.
 
@@ -93,11 +93,11 @@ translate = (_filename) ->
     f\close!
     os.exit 0
 
-translate 'attic/software/assembler.usm'
+translate 'attic/software/assembler.tal'
 os.exit 0
 
-translate 'attic/tests/opcodes.usm'
-translate 'attic/tests/basics.usm'
+translate 'attic/tests/opcodes.tal'
+translate 'attic/tests/basics.tal'
 
 -- for k, v in pairs t
 --     print k
diff --git a/mkfile b/mkfile
index 9073ac1..30a7a56 100644
--- a/mkfile
+++ b/mkfile
@@ -1,8 +1,8 @@
 </$objtype/mkfile
 
 TARG=bin/uxncli bin/uxnasm bin/uxnemu
-USM=`{walk -f projects/ | grep '\.usm$' | grep -v blank.usm}
-ROM=${USM:%.usm=%.rom}
+USM=`{walk -f projects/ | grep '\.tal$' | grep -v blank.tal}
+ROM=${USM:%.tal=%.rom}
 CFLAGS=$CFLAGS -I/sys/include/npe
 HFILES=\
 	/sys/include/npe/stdio.h\
@@ -26,8 +26,8 @@ bin:
 	mk install &&
 	rm -r npe-master
 
-%.rom:Q: %.usm bin/uxnasm
-	bin/uxnasm $stem.usm $target >/dev/null
+%.rom:Q: %.tal bin/uxnasm
+	bin/uxnasm $stem.tal $target >/dev/null
 
 bin/uxncli: uxncli.$O uxn.$O
 	$LD $LDFLAGS -o $target $prereq
diff --git a/projects/examples/blank.usm b/projects/examples/blank.tal
similarity index 100%
rename from projects/examples/blank.usm
rename to projects/examples/blank.tal
diff --git a/projects/examples/demos/automata.usm b/projects/examples/demos/automata.tal
similarity index 100%
rename from projects/examples/demos/automata.usm
rename to projects/examples/demos/automata.tal
diff --git a/projects/examples/demos/bifurcan.usm b/projects/examples/demos/bifurcan.tal
similarity index 100%
rename from projects/examples/demos/bifurcan.usm
rename to projects/examples/demos/bifurcan.tal
diff --git a/projects/examples/demos/darena.usm b/projects/examples/demos/darena.tal
similarity index 99%
rename from projects/examples/demos/darena.usm
rename to projects/examples/demos/darena.tal
index 150dd7b..0ef08b0 100644
--- a/projects/examples/demos/darena.usm
+++ b/projects/examples/demos/darena.tal
@@ -1,4 +1,4 @@
-( darena.usm )
+( darena.tal )
 ( an open-ended game of rocks and sand )
 ( contributed by and cc0 sejo 12021 )
 
diff --git a/projects/examples/demos/drum-rack.usm b/projects/examples/demos/drum-rack.tal
similarity index 100%
rename from projects/examples/demos/drum-rack.usm
rename to projects/examples/demos/drum-rack.tal
diff --git a/projects/examples/demos/life.usm b/projects/examples/demos/life.tal
similarity index 100%
rename from projects/examples/demos/life.usm
rename to projects/examples/demos/life.tal
diff --git a/projects/examples/demos/musictracker.usm b/projects/examples/demos/musictracker.tal
similarity index 100%
rename from projects/examples/demos/musictracker.usm
rename to projects/examples/demos/musictracker.tal
diff --git a/projects/examples/demos/neralie.usm b/projects/examples/demos/neralie.tal
similarity index 100%
rename from projects/examples/demos/neralie.usm
rename to projects/examples/demos/neralie.tal
diff --git a/projects/examples/demos/piano.usm b/projects/examples/demos/piano.tal
similarity index 100%
rename from projects/examples/demos/piano.usm
rename to projects/examples/demos/piano.tal
diff --git a/projects/examples/demos/polycat.usm b/projects/examples/demos/polycat.tal
similarity index 100%
rename from projects/examples/demos/polycat.usm
rename to projects/examples/demos/polycat.tal
diff --git a/projects/examples/demos/theme.usm b/projects/examples/demos/theme.tal
similarity index 100%
rename from projects/examples/demos/theme.usm
rename to projects/examples/demos/theme.tal
diff --git a/projects/examples/devices/audio.channels.usm b/projects/examples/devices/audio.channels.tal
similarity index 100%
rename from projects/examples/devices/audio.channels.usm
rename to projects/examples/devices/audio.channels.tal
diff --git a/projects/examples/devices/audio.usm b/projects/examples/devices/audio.tal
similarity index 100%
rename from projects/examples/devices/audio.usm
rename to projects/examples/devices/audio.tal
diff --git a/projects/examples/devices/console.lib.usm b/projects/examples/devices/console.lib.tal
similarity index 100%
rename from projects/examples/devices/console.lib.usm
rename to projects/examples/devices/console.lib.tal
diff --git a/projects/examples/devices/console.usm b/projects/examples/devices/console.tal
similarity index 100%
rename from projects/examples/devices/console.usm
rename to projects/examples/devices/console.tal
diff --git a/projects/examples/devices/controller.buttons.usm b/projects/examples/devices/controller.buttons.tal
similarity index 100%
rename from projects/examples/devices/controller.buttons.usm
rename to projects/examples/devices/controller.buttons.tal
diff --git a/projects/examples/devices/controller.keys.usm b/projects/examples/devices/controller.keys.tal
similarity index 100%
rename from projects/examples/devices/controller.keys.usm
rename to projects/examples/devices/controller.keys.tal
diff --git a/projects/examples/devices/datetime.usm b/projects/examples/devices/datetime.tal
similarity index 100%
rename from projects/examples/devices/datetime.usm
rename to projects/examples/devices/datetime.tal
diff --git a/projects/examples/devices/file.load.usm b/projects/examples/devices/file.load.tal
similarity index 100%
rename from projects/examples/devices/file.load.usm
rename to projects/examples/devices/file.load.tal
diff --git a/projects/examples/devices/file.save.usm b/projects/examples/devices/file.save.tal
similarity index 100%
rename from projects/examples/devices/file.save.usm
rename to projects/examples/devices/file.save.tal
diff --git a/projects/examples/devices/file.usm b/projects/examples/devices/file.tal
similarity index 100%
rename from projects/examples/devices/file.usm
rename to projects/examples/devices/file.tal
diff --git a/projects/examples/devices/mouse.usm b/projects/examples/devices/mouse.tal
similarity index 100%
rename from projects/examples/devices/mouse.usm
rename to projects/examples/devices/mouse.tal
diff --git a/projects/examples/devices/screen.usm b/projects/examples/devices/screen.tal
similarity index 100%
rename from projects/examples/devices/screen.usm
rename to projects/examples/devices/screen.tal
diff --git a/projects/examples/gui/animation.usm b/projects/examples/gui/animation.tal
similarity index 100%
rename from projects/examples/gui/animation.usm
rename to projects/examples/gui/animation.tal
diff --git a/projects/examples/gui/hover.usm b/projects/examples/gui/hover.tal
similarity index 100%
rename from projects/examples/gui/hover.usm
rename to projects/examples/gui/hover.tal
diff --git a/projects/examples/gui/label.usm b/projects/examples/gui/label.usm
deleted file mode 100644
index 510f41e..0000000
--- a/projects/examples/gui/label.usm
+++ /dev/null
@@ -1,141 +0,0 @@
-( GUI Labels )
-
-%RTN { JMP2r }
-%2// { #01 SFT2 }
-%8** { #30 SFT2 }
-
-( devices )
-
-|00 @System [ &vector $2 &pad $6 &r $2 &g $2 &b $2 ]
-|20 @Screen [ &vector $2 &width $2 &height $2 &pad $2 &x $2 &y $2 &addr $2 &color $1 ]
-
-( variables )
-
-|0000
-
-@label [ &x $2 &y $2 &color $1 &addr $2 ]
-@center [ &x $2 &y $2 ]
-
-( program )
-
-|0100
-	
-	( theme ) #0f0f .System/r DEO2 #0fff .System/g DEO2 #0ff0 .System/b DEO2
-	
-	;draw JSR2
-	
-BRK
-
-@draw ( -- )
-	
-	( find screen center )
-	.Screen/width DEI2 2// .center/x STZ2
-	.Screen/height DEI2 2// .center/y STZ2
-
-	( draw ver line )
-	.center/x LDZ2 .Screen/x DEO2 #0000 .Screen/y DEO2
-	&draw-ver
-		( draw ) #02 .Screen/color DEO
-		( incr ) .Screen/y DEI2 #0002 ADD2 .Screen/y DEO2
-		.Screen/y DEI2 .Screen/height DEI2 LTH2 ,&draw-ver JCN
-
-	.center/x LDZ2 .center/y LDZ2 #0010 SUB2 #2c ;text1 ;draw-label-left JSR2
-	.center/x LDZ2 .center/y LDZ2 #2c ;text2 ;draw-label-middle JSR2
-	.center/x LDZ2 .center/y LDZ2 #0010 ADD2 #2c ;text3 ;draw-label-right JSR2
-	.center/x LDZ2 .center/y LDZ2 #0020 ADD2 #2c ;text4 ;draw-label-middle JSR2
-	.center/x LDZ2 .center/y LDZ2 #0030 ADD2 #2c ;text5 ;draw-label-middle JSR2
-
-RTN
-
-@draw-label-left ( x y color addr -- )
-	
-	( load ) .label/addr STZ2 .label/color STZ .Screen/y DEO2 .Screen/x DEO2
-	.label/addr LDZ2
-	&loop
-		( draw ) DUP2 LDA #00 SWP 8** ;font ADD2 .Screen/addr DEO2 .label/color LDZ .Screen/color DEO
-		( incr ) #0001 ADD2
-		( incr ) .Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
-		DUP2 LDA ,&loop JCN
-	POP2
-
-RTN
-
-@draw-label-middle ( x y color addr -- )
-	
-	( load ) .label/addr STZ2 .label/color STZ .Screen/y DEO2
-	( align ) .label/addr LDZ2 ;get-text-length JSR2 8** 2// SUB2 .Screen/x DEO2
-	.label/addr LDZ2
-	&loop
-		( draw ) DUP2 LDA #00 SWP 8** ;font ADD2 .Screen/addr DEO2 .label/color LDZ .Screen/color DEO
-		( incr ) #0001 ADD2
-		( incr ) .Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
-		DUP2 LDA ,&loop JCN
-	POP2
-
-RTN
-
-@draw-label-right ( x y color addr -- )
-	
-	( load ) .label/addr STZ2 .label/color STZ .Screen/y DEO2
-	( align ) .label/addr LDZ2 ;get-text-length JSR2 8** SUB2 .Screen/x DEO2
-	.label/addr LDZ2
-	&loop
-		( draw ) DUP2 LDA #00 SWP 8** ;font ADD2 .Screen/addr DEO2 .label/color LDZ .Screen/color DEO
-		( incr ) #0001 ADD2
-		( incr ) .Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
-		DUP2 LDA ,&loop JCN
-	POP2
-
-RTN
-
-@get-text-length ( label* -- length )
-	
-	#0000 ( counter )
-	&loop
-		( incr ) #0001 ADD2 OVR2 OVR2 ADD2
-		LDA ,&loop JCN
-	SWP2 POP2
-
-RTN
-
-@font ( spectrum-zx font )
-[
-	0000 0000 0000 0000 0000 2400 7e3c 0000 0000 2400 3c42 0000 0000 6c7c 7c38 1000
-	0010 387c 7c38 1000 0038 387c 6c10 3800 0010 387c 7c10 3800 0000 0018 1800 0000
-	007e 4242 4242 7e00 0000 1824 2418 0000 0018 2442 4224 1800 001e 063a 4a48 3000
-	0038 446c 107c 1000 000c 0808 0838 3800 003e 2222 2266 6600 0000 0822 0022 0800
-	0000 1018 1c18 1000 0000 0818 3818 0800 0008 1c00 001c 0800 0028 2828 2800 2800
-	003e 4a4a 3a0a 0a00 000c 3046 620c 3000 0000 0000 0000 ffff 0010 3800 3810 0038
-	0008 1c2a 0808 0800 0008 0808 2a1c 0800 0000 0804 7e04 0800 0000 1020 7e20 1000
-	0000 4040 7e00 0000 0000 0024 6624 0000 0000 1038 7c00 0000 0000 007c 3810 0000
-	0000 0000 0000 0000 0008 0808 0800 0800 0014 1400 0000 0000 0024 7e24 247e 2400
-	0008 1e28 1c0a 3c08 0042 0408 1020 4200 0030 4832 4c44 3a00 0008 1000 0000 0000
-	0004 0808 0808 0400 0010 0808 0808 1000 0000 1408 3e08 1400 0000 0808 3e08 0800
-	0000 0000 0008 0810 0000 0000 3c00 0000 0000 0000 0000 0800 0000 0204 0810 2000
-	003c 464a 5262 3c00 0018 2808 0808 3e00 003c 4202 3c40 7e00 003c 421c 0242 3c00
-	0008 1828 487e 0800 007e 407c 0242 3c00 003c 407c 4242 3c00 007e 0204 0810 1000
-	003c 423c 4242 3c00 003c 4242 3e02 3c00 0000 0008 0000 0800 0000 0800 0008 0810
-	0000 0810 2010 0800 0000 003e 003e 0000 0000 1008 0408 1000 003c 4202 0c00 0800
-	003c 425a 5442 3c00 0018 2442 7e42 4200 007c 427c 4242 7c00 003c 4240 4042 3c00
-	0078 4442 4244 7800 007e 407c 4040 7e00 003e 4040 7c40 4000 003c 4240 4e42 3c00
-	0042 427e 4242 4200 003e 0808 0808 3e00 0002 0202 4242 3c00 0044 4870 4844 4200
-	0040 4040 4040 7e00 0042 665a 4242 4200 0042 6252 4a46 4200 003c 4242 4242 3c00
-	007c 4242 7c40 4000 003c 4242 524a 3c00 007c 4242 7c44 4200 003c 403c 0242 3c00
-	00fe 1010 1010 1000 0042 4242 4242 3c00 0042 4242 4224 1800 0042 4242 5a66 4200
-	0042 2418 1824 4200 0082 4428 1010 1000 007e 0408 1020 7e00 000c 0808 0808 0c00
-	0040 2010 0804 0200 0018 0808 0808 1800 0008 1422 0000 0000 0000 0000 0000 7e00
-	0008 0400 0000 0000 0000 1c02 1e22 1e00 0020 203c 2222 3c00 0000 1e20 2020 1e00
-	0002 021e 2222 1e00 0000 1c22 3c20 1e00 000c 101c 1010 1000 0000 1c22 221e 021c
-	0020 202c 3222 2200 0008 0018 0808 0400 0008 0008 0808 4830 0020 2428 3028 2400
-	0010 1010 1010 0c00 0000 6854 5454 5400 0000 5864 4444 4400 0000 3844 4444 3800
-	0000 7844 4478 4040 0000 3c44 443c 0406 0000 2c30 2020 2000 0000 3840 3804 7800
-	0010 103c 1010 0c00 0000 4444 4444 3800 0000 4444 2828 1000 0000 4454 5454 2800
-	0000 4428 1028 4400 0000 4444 443c 0438 0000 7c08 1020 7c00 000c 0810 1008 0c00
-	0008 0808 0808 0800 0030 1008 0810 3000 0000 0032 4c00 0000 3c42 99a1 a199 423c
-]
-
-@text1 [ "Left 20 "Aligned 00 ]
-@text2 [ "Middle 20 "Aligned 00 ]
-@text3 [ "Right 20 "Aligned 00 ]
-@text4 [ "even 00 ]
-@text5 [ "odd 00 ]
\ No newline at end of file
diff --git a/projects/examples/gui/picture.usm b/projects/examples/gui/picture.tal
similarity index 100%
rename from projects/examples/gui/picture.usm
rename to projects/examples/gui/picture.tal
diff --git a/projects/examples/gui/proportional-font.usm b/projects/examples/gui/proportional-font.tal
similarity index 100%
rename from projects/examples/gui/proportional-font.usm
rename to projects/examples/gui/proportional-font.tal
diff --git a/projects/examples/gui/shapes.usm b/projects/examples/gui/shapes.tal
similarity index 100%
rename from projects/examples/gui/shapes.usm
rename to projects/examples/gui/shapes.tal
diff --git a/projects/examples/gui/wallpaper.usm b/projects/examples/gui/wallpaper.tal
similarity index 100%
rename from projects/examples/gui/wallpaper.usm
rename to projects/examples/gui/wallpaper.tal
diff --git a/projects/software/asma.usm b/projects/software/asma.tal
similarity index 99%
rename from projects/software/asma.usm
rename to projects/software/asma.tal
index 547e76d..1a3534f 100644
--- a/projects/software/asma.usm
+++ b/projects/software/asma.tal
@@ -22,7 +22,7 @@
 	(
 		Assemble the source code into an output ROM file.
 
-		If all you want is to use asma.usm to assemble files, insert a BRK
+		If all you want is to use asma.tal to assemble files, insert a BRK
 		after this statement.
 	)
 	;&source-file ;&dest-file ;asma-assemble-file JSR2
@@ -60,7 +60,7 @@
 	#00ff JMP2
 
 	&source-file
-		"projects/demos/piano.usm 00
+		"projects/demos/piano.tal 00
 	&dest-file
 		"bin/asma-boot.rom 00