[Zope] HTTP Quoting, XHTML

Hello all, Is there a Python/Zope function for HTTP quoting of strings? Also, we're doing all of our development in strict XHTML. So far things have gone pretty smoothly. If anyone has had any prior experience, I would very much appreciate getting some idea of things to watch out for, problems, incompatibilities, etc. that I may need to watch out for. Thanks. Regards, Samir Mishra Central Bank of the U.A.E. P. O. Box 854 Abu Dhabi United Arab Emirates