diff --git a/diff2.js b/diff2.js
index b89a4a1..2e2d53f 100644
--- a/diff2.js
+++ b/diff2.js
@@ -747,6 +747,10 @@ function(A, B, cmp){
 // 			...this is already tracked by diffSections(..) but after 
 // 			handler(..) arrays are more like hashes, and we need to 
 // 			account for this....
+// 		XXX yet another approach to this is to work in two stages:
+// 				1) diff ignoring keys...
+// 				2) selectively match keys...
+// 			...need to test how complex this will be...
 //
 var diff =
 function(A, B){