diff --git a/diff.js b/diff.js
index e435c8e..38543a8 100644
--- a/diff.js
+++ b/diff.js
@@ -50,6 +50,7 @@ var MIN_TEXT_LENGTH = 100
 //			https://www.npmjs.com/package/jsondiffpatch
 //
 //		- diff compatibility checking...
+//			diff.check(A) -> bool
 //
 //
 //