diff --git a/js_src/Keyboard.js b/js_src/Keyboard.js
index 67e936d..cef211c 100644
--- a/js_src/Keyboard.js
+++ b/js_src/Keyboard.js
@@ -10,6 +10,7 @@ function initKeyboard() {
 
 		switch (ch) {
 			case 'c': clearDoodle(); break;
+			case 'n': clearDoodle(); break;
 			case 'p': print(); break;
 			case 'u': oopsUndo(); break;
 			case 'e': settingsWindow.downloadGcode(); break;
@@ -18,8 +19,11 @@ function initKeyboard() {
 			case 'C': drawCircle(250,180,80,64); break; //x,y,r,res 
 			case 'T': drawCircle(250,180,80,3); break; //triangle
 			case 'X': drawCircle(250,180,80,6); break; //hexagon
-			case 'H': previewUp(true); break;
-			case 'h': previewDown(true); break;
+			case 'h': previewUp(true); break;
+			case 'H': previewDown(true); break;
+			case 's': saveSketch(); break;
+			case 'L': nextDoodle(); break;
+			case 'l': prevDoodle(); break;
 			case '[': previewTwistLeft(); break;
 			case ']': previewTwistRight(); break;
 			case '\'': resetTwist(); break;
diff --git a/js_src/gcodeGenerating.js b/js_src/gcodeGenerating.js
index 7afaa21..35eab62 100644
--- a/js_src/gcodeGenerating.js
+++ b/js_src/gcodeGenerating.js
@@ -145,6 +145,8 @@ function generate_gcode() {
 
   for (var layer = 0; layer < layers; layer++) {
 
+    gcode.push(";LAYER:"+layer);
+
     var p = JSON.parse(JSON.stringify(points)); // [].concat(points);
 
     if (p.length < 2) return;