diff --git a/diff2.js b/diff2.js
index c9444e6..8486927 100644
--- a/diff2.js
+++ b/diff2.js
@@ -826,7 +826,10 @@ function(A, B, cmp){
 // 		.....will we have container border issues here???
 // 		........should this be optional???
 // 		this can also be achieved by nesting...
-// 		XXX not yet sure if this is not over-complicating things...
+// 		XXX not yet sure if this whole thing is not over-complicating things...
+// XXX one different approach that could also be used is to combine this 
+// 		with the original implementation and use diff(..) as a sub-tree 
+// 		comparator...
 var keyValueDiff =
 function(A, B, options={}){
 	return diffSections(