diff --git a/Viewer/features/core.js b/Viewer/features/core.js
index 4d3debab..32c18469 100755
--- a/Viewer/features/core.js
+++ b/Viewer/features/core.js
@@ -2175,15 +2175,6 @@ var JournalActions = actions.Actions({
 						// run action...
 						[e.action].apply(that, e.args) }) }],
 
-	// XXX handle .nested undo actions...
-	// 		...either automatically or allow the client to recursively 
-	// 		call the undo handler for them...
-	// XXX how do we handle nested action calls??
-	// 		Example:
-	// 			.toggleMark(..) -> .tag(..)
-	// 		...one way to do this is to group all the nested calls and 
-	// 		undo them as one unit, this should also be controllable by 
-	// 		the root action...
 	// XXX needs very careful revision...
 	// 		- should this be thread safe??? (likely not)
 	// 		- revise actions...