[Zope] hiding tracebacks, and catching exceptions

The persistent-CGI version of Zope always seems to append tracebacks to error pages, and it makes for a messy-looking site. 1) is there any way of setting it so it sends these to web server logs (on stdout) and not to the HTML? 2)Is there any way of catching and handling exceptions from within DTML? --- Julian Morrison Programmer (Zereau Ltd)