[ZPT] how do I test the existence of a variable?

[Thomas Olsen]

On Thursday 21 March 2002 13:23, seb bacon wrote:
> I suppose what I'm asking is, is there the equivalent of DTML's '_' in
> ZPT?

I think Zope Help / ZPT Reference / TALES Python expressions is the closest 
answer I can give ;-)

-- 
Regards,
    Thomas Olsen

http://www.tarpit.dk