[Zope] Calendar Product Syntax

[Harry]

In Zope Classic there is a Calendar product, which, essentially, creates a
nice calendar with a calendar DTML tag. Cool.

The instructions specify setting certain attributes with the Calendar tag. I
tried all the various syntax setting from teh DTML reference, yet none will
work at all.

Can someone help out here, ad possibly provide some hints as to the proper
syntax?

The calendar rendering tag product can be found at:

http://classic.zope.org:8080/Download/Contrib/Calendar-0.9.0.tar.gz

And it's written by tsarna@endicor.com (who did TinyTable as well), and,
yes, I've written him, and so far have received no answer.

Harry