This function is the complement of the escape() function described in its own topic elsewhere.
A string that might have been escaped with the escape() function either locally or remotely, can be converted back to a normal unescaped string with this function.
This function has Unicode support in MSIE version 4.
As far as ECMAScript is concerned, this is superceded in edition 3 with a set of generalized URI handling functions. The JScript 5.5 documentation refers to this as a deprecated feature.