This page helps in development of the SilverStripe Urlvartool. See http://doc.silverstripe.org/sapphire/en/reference/urlvariabletools for more information.
You will need a PHP-enabled webserver to use it.
It provides a bookmarklet. Drag this link to your browser's bookmark bar: SS-UVT, click the link to view it in action.
This project is available at Github: https://github.com/brackindustries/ss-uvt