diff --git a/assembler.c b/assembler.c
index ccd8663..311d0f3 100644
--- a/assembler.c
+++ b/assembler.c
@@ -47,7 +47,7 @@ Program p;
 char ops[][4] = {
 	"BRK", "NOP", "LIT", "LDR", "STR", "---", "JMP", "JSR", 
 	"EQU", "NEQ", "GTH", "LTH", "AND", "XOR", "SHL", "SHR",
-	"POP", "DUP", "SWP", "OVR", "ROT", "---", "CLN", "WSR",
+	"POP", "DUP", "SWP", "OVR", "ROT", "---", "CLN", "STH",
 	"ADD", "SUB", "MUL", "DIV", "---", "---", "---", "---"
 };
 
diff --git a/build.sh b/build.sh
index 9bc2dea..539d023 100755
--- a/build.sh
+++ b/build.sh
@@ -20,5 +20,5 @@ cc -std=c89 -DDEBUG -Wall -Wno-unknown-pragmas -Wpedantic -Wshadow -Wextra -Werr
 # cc uxn.c emulator.c -std=c89 -Os -DNDEBUG -g0 -s -Wall -Wno-unknown-pragmas -L/usr/local/lib -lSDL2 -o bin/emulator
 
 # run
-./bin/assembler projects/software/left.usm bin/boot.rom
+./bin/assembler projects/software/nasu.usm bin/boot.rom
 ./bin/emulator bin/boot.rom
diff --git a/projects/examples/blank.usm b/projects/examples/blank.usm
index e5df554..b740b82 100644
--- a/projects/examples/blank.usm
+++ b/projects/examples/blank.usm
@@ -1,29 +1,21 @@
 ( blank )
 
-&Console    { pad 8 stdio 1 }
-&Screen     { width 2 height 2 pad 4 y 2 x 2 color 1 }
-&Sprite     { pad 8 y 2 x 2 addr 2 color 1 }
-&Controller { buttons 1 }
-&Keyboard   { key 1 }
-&Mouse      { x 2 y 2 state 1 chord 1 }
-&File       { rname 2 rlen 2 rbin 2 rtxt 2 wname 2 wlen 2 wbin 2 wtxt 2 }
-
-&Label2d { x 2 y 2 color 1 addr 2 }
-&Picture2d { x 2 y 2 width 2 height 2 color 1 addr 2 }
-&Rect2d { x1 2 y1 2 x2 2 y2 2 }
-&Point2d { x 2 y 2 }
+;label2d { x 2 y 2 color 1 addr 2 }
+;picture2d { x 2 y 2 width 2 height 2 color 1 addr 2 }
+;rect2d { x1 2 y1 2 x2 2 y2 2 }
+;point2d { x 2 y 2 }
 
 |0100 @RESET BRK
-|c000 @FRAME BRK 
+|c000 @FRAME BRK
 |d000 @ERROR BRK 
 
-|FF00 ;dev/console Console
-|FF10 ;dev/screen  Screen
-|FF20 ;dev/sprite  Sprite
-|FF30 ;dev/ctrl    Controller
-|FF40 ;dev/key     Keyboard
-|FF50 ;dev/mouse   Mouse
-|FF60 ;dev/file    File
+|FF00 ;Console { pad 8 char 1 byte 1 short 2 }
+|FF10 ;Screen { width 2 height 2 pad 4 x 2 y 2 color 1 }
+|FF20 ;Sprite { pad 8 x 2 y 2 addr 2 color 1 }
+|FF30 ;Controller { buttons 1 }
+|FF40 ;Keys { key 1 }
+|FF50 ;Mouse { x 2 y 2 state 1 chord 1 }
+|FF60 ;File { pad 8 name 2 length 2 load 2 save 2 }
 
 |FFF0 .RESET .FRAME .ERROR ( vectors )
-|FFF8 [ f2ac 35bb 2b53 ] ( palette )
+|FFF8 [ 13fd 1ef3 1bf2 ]   ( palette )
\ No newline at end of file
diff --git a/projects/software/left.usm b/projects/software/left.usm
index 6a33dcc..c11920d 100644
--- a/projects/software/left.usm
+++ b/projects/software/left.usm
@@ -697,7 +697,7 @@ RTN
 @load_icn      [ feaa d6aa d4aa f400 ]
 @save_icn      [ fe82 8282 848a f400 ]
 @filepath1     [ projects/examples/gui.hover.usm 00 ]
-@filepath      [ projects/software/left.usm 00 ]
+@filepath      [ projects/software/noodle.usm 00 ]
 
 |3000 ;document { eof 2 body 8000 }
 |c000 ;clip { len 2 body 256 }
@@ -709,7 +709,7 @@ RTN
 |FF20 ;Sprite { pad 8 x 2 y 2 addr 2 color 1 }
 |FF30 ;Controller { buttons 1 }
 |FF40 ;Keys { key 1 }
-|FF50 ;Mouse { x 2 y 2 state 1 chord 1 xt 1 yt 1 }
+|FF50 ;Mouse { x 2 y 2 state 1 chord 1 }
 |FF60 ;File { pad 8 name 2 length 2 load 2 save 2 }
 
 |FFF0 .RESET .FRAME .ERROR ( vectors )
diff --git a/projects/software/noodle.usm b/projects/software/noodle.usm
new file mode 100644
index 0000000..ef0cce0
--- /dev/null
+++ b/projects/software/noodle.usm
@@ -0,0 +1,92 @@
+( 
+	app/noodle : illustration program
+)
+
+%RTN   { JMP2r }
+%RTN?  { JMP2r? }
+
+%ABS { DUP #07 SHR #ff SWP MUL? } ( abs )
+%ABS2 { DUP2 #000f SHR2 #ffff SWP2 SWP POP MUL2? } ( abs2 )
+
+;cursor { x 2 y 2 }
+;a { x 2 y 2 }
+;b { x 2 y 2 }
+;d { x 2 y 2 }
+;s { x 2 y 2 }
+
+|0100 @RESET 
+
+	#0020 #0020 #0090 #0070 ,draw-line JSR2
+
+BRK
+
+@FRAME 
+
+	,draw-cursor JSR2
+
+BRK
+
+@draw-line ( x1 y1 x2 y2 )
+
+	=b.y =b.x ( target, b )
+	=a.y =a.x ( target, a )
+
+	( dx = abs[bx - ax] )
+	~b.x ~a.x SUB2 ABS2 =d.x
+
+	( dx = abs[bx - ax] )
+	~b.y ~a.y SUB2 ABS2 =d.y
+
+	( sx = ax < bx ? 1 : -1; )
+	#ffff #00 ~a.x ~b.x GTH2 #0002 MUL2 ADD2 =s.x 
+	
+	( sy = ay < by ? 1 : -1; )
+	#ffff #00 ~a.y ~b.y GTH2 #0002 MUL2 ADD2 =s.y 
+	
+
+	#01 =Screen.color
+
+RTN
+
+@draw-cursor
+
+	~cursor.x ~Mouse.x NEQU2
+	~cursor.y ~Mouse.y NEQU2
+
+	#0000 EQU2 RTN? ( Return if unchanged )
+
+	( clear last cursor )
+	~cursor.x =Sprite.x
+	~cursor.y =Sprite.y
+	,blank_icn =Sprite.addr
+	#10 =Sprite.color
+
+	( record cursor positions )
+	~Mouse.x =cursor.x 
+	~Mouse.y =cursor.y
+
+	( draw new cursor )
+	~cursor.x =Sprite.x
+	~cursor.y =Sprite.y
+	,tool_pointer =Sprite.addr
+	#12 =Sprite.color
+
+RTN
+
+@tool_pointer [ 80c0 e0f0 f8e0 1000 ]
+@tool_hand    [ 4040 4070 f8f8 f870 ]
+@tool_eraser  [ 2050 b87c 3e1c 0800 ]
+@blank_icn    [ 0000 0000 0000 0000 ]
+
+|F000 @ERROR BRK 
+
+|FF00 ;Console { pad 8 char 1 byte 1 short 2 }
+|FF10 ;Screen { width 2 height 2 pad 4 x 2 y 2 color 1 }
+|FF20 ;Sprite { pad 8 x 2 y 2 addr 2 color 1 }
+|FF30 ;Controller { buttons 1 }
+|FF40 ;Keys { key 1 }
+|FF50 ;Mouse { x 2 y 2 state 1 chord 1 }
+|FF60 ;File { pad 8 name 2 length 2 load 2 save 2 }
+
+|FFF0 .RESET .FRAME .ERROR ( vectors )
+|FFF8 [ 13fd 1ef3 1bf2 ]   ( palette )
\ No newline at end of file
diff --git a/uxn.c b/uxn.c
index 1f52c17..9802f64 100644
--- a/uxn.c
+++ b/uxn.c
@@ -103,12 +103,12 @@ void (*ops[])(Uxn *u) = {
 Uint8 opr[][4] = { /* wstack-/+ rstack-/+ */
 	{0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {2,1,0,0}, {3,0,0,0}, {1,0,0,0}, {1,0,0,2}, {0,0,2,0}, 
 	{2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0},
-	{1,0,0,0}, {0,2,0,0}, {2,2,0,0}, {2,3,0,0}, {3,3,0,0}, {0,0,0,0}, {1,0,0,1}, {0,1,1,0},
+	{1,0,0,0}, {0,2,0,0}, {2,2,0,0}, {2,3,0,0}, {3,3,0,0}, {0,0,0,0}, {0,0,0,1}, {0,1,1,0},
 	{2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,2,0,0},
 	/* 16-bit */
 	{0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {2,2,0,0}, {4,0,0,0}, {2,0,0,0}, {2,0,0,0}, {0,0,0,0}, /* TODO */
 	{4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, /* TODO */
-	{0,2,0,0}, {0,2,0,0}, {1,1,0,0}, {4,6,0,0}, {6,6,0,0}, {0,0,0,0}, {2,0,0,2}, {0,2,2,0}, /* TODO */
+	{0,2,0,0}, {0,2,0,0}, {1,1,0,0}, {4,6,0,0}, {6,6,0,0}, {0,0,0,0}, {0,0,0,2}, {0,2,2,0}, /* TODO */
 	{4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,2,0,0}
 };
 
@@ -192,6 +192,7 @@ bootuxn(Uxn *u)
 	char *cptr = (char *)u;
 	for(i = 0; i < sizeof(*u); i++)
 		cptr[i] = 0;
+
 	return 1;
 }