diff --git a/go/vm/interpreter.go b/go/vm/interpreter.go
index ffe8f15..90fbb43 100644
--- a/go/vm/interpreter.go
+++ b/go/vm/interpreter.go
@@ -7,10 +7,12 @@ import (
 type BatchCode uint16
 
 const (
-	MENU_DOWN = 256
-	MENU_UP = 257
-	MENU_NEXT = 258
-	MENU_PREVIOUS = 259
+	_MENU_OFFSET = 256
+	MENU_DOWN = _MENU_OFFSET
+	MENU_UP = _MENU_OFFSET + 1
+	MENU_NEXT = _MENU_OFFSET + 2
+	MENU_PREVIOUS = _MENU_OFFSET + 3
+	//MENU_BROWSE = _MENU_OFFSET + 4
 )
 
 var (
@@ -19,6 +21,7 @@ var (
 		"UP": MENU_UP,
 		"NEXT": MENU_NEXT,
 		"PREVIOUS": MENU_PREVIOUS,
+		//"BROWSE": MENU_BROWSE, 
 	}
 )