diff --git a/diff.js b/diff.js
index 0af3669..8f54fe1 100644
--- a/diff.js
+++ b/diff.js
@@ -134,8 +134,7 @@ var getCommonSections = function(A, B, cmp, min_chunk){
 		// cache...
 		var res = (cache[a] || [])[b]
 		if(res != null){
-			return res
-		}
+			return res }
 
 		// collect common chunk...
 		var chunk = {
@@ -145,10 +144,10 @@ var getCommonSections = function(A, B, cmp, min_chunk){
 		}
 		var l = chunk.length
 		while((a+l < A.length && b+l < B.length)
-					// cmp non-empty slots only...
-					&& ((a+l in A && b+l in B) ?
-						cmp(A[a+l], B[b+l])
-						: (!(a+l in A) && !(b+l in B)))){
+				// cmp non-empty slots only...
+				&& ((a+l in A && b+l in B) ?
+					cmp(A[a+l], B[b+l])
+					: (!(a+l in A) && !(b+l in B)))){
 			l = chunk.length += 1 }
 		// ignore small chunks...
 		l = chunk.length >= min_chunk ? 
diff --git a/diff2.js b/diff2.js
index d972a9f..d830a12 100644
--- a/diff2.js
+++ b/diff2.js
@@ -80,6 +80,7 @@ module.HANDLERS = {
 	
 	// Functions...
 	//
+	// XXX EXPERIMENTAL...
 	// XXX STUB...
 	func: {
 		match: function(obj){
@@ -260,6 +261,7 @@ function(obj, handlers=module.HANDLERS){
 
 
 
+// 
 // Format:
 // 	[
 //		[<path>, {type: <name>}],
@@ -269,6 +271,7 @@ function(obj, handlers=module.HANDLERS){
 //		[<path>, <value>], 
 // 	]
 //
+// XXX add a tree mode -- containers as levels...
 // XXX need a way to index the path...
 // 		...and to filter paths by pattern...
 // XXX might be a good idea to generate "structural hashes" for objects...
@@ -407,6 +410,12 @@ function(...attrs){
 
 
 
+//---------------------------------------------------------------------
+// XXX construct...
+
+
+
+
 
 //---------------------------------------------------------------------
 // XXX move to test...