At last, something I know the asnwer to! The DTML Language Reference http://www.zope.org/Documentation/Guides/DTML-HTML/DTML.html has an Appendix A, http://www.zope.org/Documentation/Guides/DTML-HTML/DTML.19.html at the end. Even though there's no sample code anywhere on the page to show you how they work, there are lot's of cool formats here and it goes something like this : <dtml-call "REQUEST.set('this_time', _.DateTime fmt=AMPM)"> using the first on in the list as an example. I had to search back throuh old Mail List aArchive to find this. Good Luck! Jerry S.