Custom grid filter from XML

What is the XML syntax for creating custom server-side filters directly in the XML? I am currently creating the filters in javascript like this and all works well:


     grid.attachHeader(",<input type=‘text’…);


The XML file is actually being constructed at run-time to load data a bit at a time from the server, and as I said, it is all working just fine, but I would like to be able to construct my filters directly in the xml file and not have to use setColSorting() or attachHeader().


can be mapped to the
<column sort=“server” …

>> grid.attachHeader(",<input type=‘text’…);
While there is no direct representative in XML, can be executed through afterInit section

<column … normal configuration here