> What do i need to pass as a parameter of the collection 
> function? Is it a URI of an catalog xml file that list all 
> the files i need to loop through? or is it just the URI of 
> the folder that contains all the xml files i need?

In Saxon, those are the two options supported by the default collection URI
resolver. You can use either approach, but I think you wanted the latter. If
there's part of the documentation you don't understand, please explain what
part.

Michael Kay
http://www.saxonica.com/