Kelvin Cheong writes:

<dtml-in "category_method(id='1')" size=100 start=query_start> id=<dtml-var id>&seq=<dtml-var seq>&vid=<dtml-var vid>

where can i find out more about these properties, i.e. the seq...vid... and so on..?

The argument to "dtml-in" is a sequence of objects. "dtml-in" iterates over the objects. In each iteration, "dtml-in" exports the current objects attributes into the namespace. Thus, "seq", "vid", ... are probably attributes of your objects. Dieter