[Zope] Getting current object in an expression while in a dtml-in loop

Hi, In my search results page I would like to display only those results where the user has the permission to view those files. My question is: how do I refer to the current object in a <dtml-in> loop? I know that I could use <dtml-in Catalog skip_unauthorized> but it still displays all results, even those where the user has absolutely no right. Here is the example: <dtml-in Catalog> <dtml-if expr="_.SecurityGetUser().has_permission('View', OBJECT?????)"> ... </dtml-if> </dtml-in> Can anyone help? Thanks Hans