diff --git a/game/assets/textures/frame_9.png b/game/assets/textures/frame_9.png
index 1f74456..f0acecc 100644
Binary files a/game/assets/textures/frame_9.png and b/game/assets/textures/frame_9.png differ
diff --git a/game/assets/textures/frame_line_9.png b/game/assets/textures/frame_line_9.png
index 124ac7e..cc87f04 100644
Binary files a/game/assets/textures/frame_line_9.png and b/game/assets/textures/frame_line_9.png differ
diff --git a/game/assets/textures/frame_red_9.png b/game/assets/textures/frame_red_9.png
index 8cb5fd2..286b80b 100644
Binary files a/game/assets/textures/frame_red_9.png and b/game/assets/textures/frame_red_9.png differ
diff --git a/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/Tutorials.kt b/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/Tutorials.kt
index b3f5375..cb35da3 100644
--- a/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/Tutorials.kt
+++ b/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/Tutorials.kt
@@ -132,6 +132,7 @@ private val useKeyboardDialog = HelperDialog(
     400, 300, 550, 300,
     "You can also use a keyboard.\n" +
         "Press [RED]M[] for MOV, [RED]I[] for INT\n" +
+        "[RED]A[] for ADD, [RED]C[] for CMP\n" +
         "[RED]0[] .. [RED]9[] for digits and\n" +
         "[RED]A[], [RED]B[], [RED]X[] or [RED]Y[] for the registers"
 )
diff --git a/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/editor/Editor.kt b/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/editor/Editor.kt
index 219db0f..efad32b 100644
--- a/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/editor/Editor.kt
+++ b/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/editor/Editor.kt
@@ -248,6 +248,14 @@ class Editor(private val widthInBlocks: Int) {
                     setSymbolUnderCursor("MOV")
                     moveCursorRight()
                 }
+                in listOf('c', 'C') -> {
+                    setSymbolUnderCursor("CMP")
+                    moveCursorRight()
+                }
+                in listOf('a', 'A') -> {
+                    setSymbolUnderCursor("ADD")
+                    moveCursorRight()
+                }
             }
         }
     }
diff --git a/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/states/CodeEditorState.kt b/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/states/CodeEditorState.kt
index 95cc95e..bf50d09 100644
--- a/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/states/CodeEditorState.kt
+++ b/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/states/CodeEditorState.kt
@@ -25,8 +25,8 @@ class CodeEditorState : IState {
     private val inputProcessor = Gdx.input.inputProcessor
     private lateinit var editor: Editor
     private var showHelp: Boolean = false
-    private val cursorFrame: NinePatch by lazy { NinePatch(am.texture(Assets.Names.CURSOR_FRAME), 6, 6, 6, 6) }
-    private val errorFrame: NinePatch by lazy { NinePatch(am.texture(Assets.Names.ERROR_FRAME), 6, 6, 6, 6) }
+    private val cursorFrame: NinePatch by lazy { NinePatch(am.texture(Assets.Names.CURSOR_FRAME), 9, 9, 9, 9) }
+    private val errorFrame: NinePatch by lazy { NinePatch(am.texture(Assets.Names.ERROR_FRAME), 9, 9, 9, 9) }
     private val buttonPanel = ButtonPanel { instruction: String, update: Boolean ->
         when {
             update -> editor.appendNumberUnderCursor(instruction[0])
diff --git a/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/states/PlottingScreenState.kt b/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/states/PlottingScreenState.kt
index 49d93c8..061672e 100644
--- a/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/states/PlottingScreenState.kt
+++ b/game/src/main/kotlin/org/catinthedark/jvcrplotter/game/states/PlottingScreenState.kt
@@ -40,7 +40,7 @@ class PlottingScreenState : IState {
     private var errorMessage: String? = ""
     private lateinit var editor: Editor
     private val cursorFrame: NinePatch by lazy { NinePatch(am.texture(Assets.Names.LINE_FRAME), 6, 6, 6, 6) }
-    private val errorFrame: NinePatch by lazy { NinePatch(am.texture(Assets.Names.ERROR_FRAME), 6, 6, 6, 6) }
+    private val errorFrame: NinePatch by lazy { NinePatch(am.texture(Assets.Names.ERROR_FRAME), 9, 9, 9, 9) }
     private val font by lazy { am.font(Assets.Names.FONT_BIG_GREEN) }
     private val editorRender: EditorRender by lazy {
         EditorRender(