diff --git a/lib/OpenLayers/Layer.js b/lib/OpenLayers/Layer.js
index 2cc8571103..52b6aedbcb 100644
--- a/lib/OpenLayers/Layer.js
+++ b/lib/OpenLayers/Layer.js
@@ -169,6 +169,9 @@ OpenLayers.Layer.prototype = {
      *   so that subclasses can override this and take special action once 
      *   they have their map variable set. 
      * 
+     *  Here we take care to bring over any of the necessary default properties
+     *   from the map. 
+     * 
      * @param {OpenLayers.Map} map
      */
     setMap: function(map) {