diff --git a/ui (gen4)/experiments/preact-ribbons.html b/ui (gen4)/experiments/preact-ribbons.html
index 8975045f..aec133ff 100755
--- a/ui (gen4)/experiments/preact-ribbons.html	
+++ b/ui (gen4)/experiments/preact-ribbons.html	
@@ -163,6 +163,7 @@ class IGImageMark extends preact.Component {
 }
 
 
+// XXX HACK...
 var ribbon_set_dom
 
 function render(data, images, scale){
diff --git a/ui (gen4)/features/keyboard.js b/ui (gen4)/features/keyboard.js
index 314a04bb..f0a0c545 100755
--- a/ui (gen4)/features/keyboard.js	
+++ b/ui (gen4)/features/keyboard.js	
@@ -242,8 +242,8 @@ module.GLOBAL_KEYBOARD = {
 
 
 		// theme...
-		ctrl_B: 'toggleTheme!',
-		ctrl_shift_B: 'toggleTheme!: "prev"',
+		//ctrl_B: 'toggleTheme!',
+		//ctrl_shift_B: 'toggleTheme!: "prev"',
 		'ctrl+-': 'darkerTheme!',
 		'ctrl++': 'lighterTheme!',