diff --git a/diff2.js b/diff2.js
index 59c17df..b89a4a1 100644
--- a/diff2.js
+++ b/diff2.js
@@ -740,6 +740,14 @@ function(A, B, cmp){
 // 				compared...
 // 			- handle item shifts gracefully...
 // 			- diff recursively instead of flat...
+// 		XXX another way to approach this is to treat indexes in a relative 
+// 			manner, i.e. keep track of relative order of elements...
+// 			e.g. if we insert a sub-array then all the elements after it are 
+// 			simply shifted, that is, their relative order is maintained...
+// 			...this is already tracked by diffSections(..) but after 
+// 			handler(..) arrays are more like hashes, and we need to 
+// 			account for this....
+//
 var diff =
 function(A, B){
 	return diffSections(