diff --git a/README.md b/README.md
index f7b6dd3..3739463 100644
--- a/README.md
+++ b/README.md
@@ -1698,10 +1698,13 @@ Example:
 var p = Promise.iter(
         [1, 2, 3, Promise.resolve(4), [5, 6]], 
         function(elem){
+            // duplicate even numbers...
             return elem % 2 == 0 ?
                     [elem, elem]
+                // return arrays as-is...
                 : elem instanceof Array ?
                     [elem]
+                // remove other elements...
                 : [] })
     .then(function(lst){
         console.log(lst) }) // -> [2, 2, 4, 4, [5, 6]]
diff --git a/package.json b/package.json
index ac5ea5c..6d3fc7f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ig-types",
-  "version": "6.11.4",
+  "version": "6.12.0",
   "description": "Generic JavaScript types and type extensions...",
   "main": "main.js",
   "scripts": {