This class allows you to provide spell checking for text. It uses Google to check if the text is correct and to get some suggestions. This is done by a PHP script that uses cURL to get some xml and translates it to JSON, so we can use Request.JSON for our client-side. That is where Request.SpellCheck is build on. Request.SpellCheck will give you an array in the onSuccess event that you can use. (for mark-up things)