diff --git a/build.sh b/build.sh
index ebd8234..6aac468 100755
--- a/build.sh
+++ b/build.sh
@@ -42,7 +42,7 @@ then
 fi
 
 echo "Assembling.."
-./bin/uxnasm projects/demos/drum-rack.usm bin/boot.rom
+./bin/uxnasm projects/examples/devices/screen.usm bin/boot.rom
 
 echo "Running.."
 if [ "${2}" = '--cli' ]; 
diff --git a/projects/examples/devices/console.usm b/projects/examples/devices/console.usm
index a763d7e..fca01ae 100644
--- a/projects/examples/devices/console.usm
+++ b/projects/examples/devices/console.usm
@@ -17,9 +17,9 @@ BRK
 @print ( addr* -- )
 	
 	&loop
-		( send ) DUP2 LDA .Console/char DEO
+		( send ) LDAk .Console/char DEO
 		( incr ) #0001 ADD2
-		( loop ) DUP2 LDA #00 NEQ ,&loop JCN
+		( loop ) LDAk #00 NEQ ,&loop JCN
 	POP2
 
 RTN
diff --git a/projects/examples/devices/file.usm b/projects/examples/devices/file.usm
index 57a0721..13c39b1 100644
--- a/projects/examples/devices/file.usm
+++ b/projects/examples/devices/file.usm
@@ -49,10 +49,10 @@ BRK
 			( draw ) #41 .Screen/color DEO
 			( incr ) .Screen/addr DEI2 #0010 ADD2 .Screen/addr DEO2
 			( incr ) SWP2 8+ SWP2
-			OVR2 OVR2 LTH2 ,&hor JCN
+			LTH2k ,&hor JCN
 		POP2 POP2
 		( incr ) SWP2 8+ SWP2
-		OVR2 OVR2 LTH2 ,&ver JCN
+		LTH2k ,&ver JCN
 	POP2 POP2
 	
 	( save file )
diff --git a/projects/examples/devices/mouse.usm b/projects/examples/devices/mouse.usm
index 81e940d..34dc4dc 100644
--- a/projects/examples/devices/mouse.usm
+++ b/projects/examples/devices/mouse.usm
@@ -73,7 +73,6 @@ BRK
 @draw-cursor ( -- )
 	
 	( clear last cursor )
-	#fff8 .Screen/addr DEO2
 	.pointer/x LDZ2 .Screen/x DEO2
 	.pointer/y LDZ2 .Screen/y DEO2
 	#30 .Screen/color DEO
diff --git a/projects/examples/devices/screen.usm b/projects/examples/devices/screen.usm
index 87a480f..ac594f8 100644
--- a/projects/examples/devices/screen.usm
+++ b/projects/examples/devices/screen.usm
@@ -45,7 +45,7 @@ BRK
 			.center/y LDZ2 #0040 SUB2 ADD2 .Screen/y DEO2
 		( draw ) OVR .Screen/color DEO
 		( incr ) SWP #01 ADD SWP
-		DUP2 NEQ ,&loop JCN
+		NEQk ,&loop JCN
 	POP2
 	
 RTN
@@ -69,7 +69,7 @@ RTN
 		( draw ) #21 .Screen/color DEO
 
 		( incr ) SWP #01 ADD SWP
-		DUP2 LTH ,&loop JCN
+		LTHk ,&loop JCN
 	POP2
 
 RTN
diff --git a/projects/examples/gui/animation.usm b/projects/examples/gui/animation.usm
index 9e5d90c..0a38e46 100644
--- a/projects/examples/gui/animation.usm
+++ b/projects/examples/gui/animation.usm
@@ -54,13 +54,13 @@ BRK
 		.dvd/x LDZ2 [ .dvd/x LDZ2 #0020 ADD2 ]
 		&hor
 			OVR2 .Screen/x DEO2
-			( draw ) DUPr STHr .Screen/color DEO
+			( draw ) STHkr .Screen/color DEO
 			( next ) .Screen/addr DEI2 #0008 ADD2 .Screen/addr DEO2
 			( incr ) SWP2 #0008 ADD2 SWP2
-			OVR2 OVR2 LTH2 ,&hor JCN
+			LTH2k ,&hor JCN
 		POP2 POP2
 		( incr ) SWP2 #0008 ADD2 SWP2
-		OVR2 OVR2 LTH2 ,&ver JCN
+		LTH2k ,&ver JCN
 	POP2 POP2
 	( destroy ) POPr
 
diff --git a/projects/examples/gui/picture.usm b/projects/examples/gui/picture.usm
index f09d84b..badc0c1 100644
--- a/projects/examples/gui/picture.usm
+++ b/projects/examples/gui/picture.usm
@@ -52,10 +52,10 @@ BRK
 			( draw ) .color LDZ .Screen/color DEO
 			( incr ) .Screen/addr DEI2 8+ .Screen/addr DEO2
 			( incr ) SWP2 8+ SWP2
-			OVR2 OVR2 LTH2 ,&hor JCN
+			LTH2k ,&hor JCN
 		POP2 POP2
 		( incr ) SWP2 8+ SWP2
-		OVR2 OVR2 LTH2 ,&ver JCN
+		LTH2k ,&ver JCN
 	POP2 POP2
 
 RTN
@@ -72,10 +72,10 @@ RTN
 			( draw ) .color LDZ .Screen/color DEO
 			( incr ) .Screen/addr DEI2 #0010 ADD2 .Screen/addr DEO2
 			( incr ) SWP2 8+ SWP2
-			OVR2 OVR2 LTH2 ,&hor JCN
+			LTH2k ,&hor JCN
 		POP2 POP2
 		( incr ) SWP2 8+ SWP2
-		OVR2 OVR2 LTH2 ,&ver JCN
+		LTH2k ,&ver JCN
 	POP2 POP2
 
 RTN
@@ -91,10 +91,10 @@ RTN
 			( save ) OVR2 .Screen/x DEO2
 			( draw ) .color LDZ .Screen/color DEO
 			( incr ) SWP2 8+ SWP2
-			OVR2 OVR2 LTH2 ,&hor JCN
+			LTH2k ,&hor JCN
 		POP2 POP2
 		( incr ) SWP2 8+ SWP2
-		OVR2 OVR2 LTH2 ,&ver JCN
+		LTH2k ,&ver JCN
 	POP2 POP2
 
 RTN