Some more commentary.

danielmiladinov · danielmiladinov · commit df5d4910bfe6 · 2012-08-20T22:50:42.000-04:00
diff --git a/digit_name.js b/digit_name.js
@@ -7,6 +7,6 @@ var digit_name = function () {
     return function (n) {
         return names[n];
     }
-}();
+}(); // Here is the outer function being called.
 
 alert(digit_name(3)); // 'three'

Original file line number	Diff line number	Diff line change
`@@ -7,6 +7,6 @@ var digit_name = function () {`
`7`	`7`	`return function (n) {`
`8`	`8`	`return names[n];`
`9`	`9`	`}`
`10`		`-}();`
	`10`	`+}(); // Here is the outer function being called.`
`11`	`11`
`12`	`12`	`alert(digit_name(3)); // 'three'`