[Zope] create DTML-Source-link like on zope.org

[Chris Withers]

Deryk Barker wrote:
<snip how-to for view source>
> 
> Well I did and get a NameError looking for document_src.

What object are you trying to view the source of?
It's only work (and only makes sense) on things like DTML methods and
DTML documents.

cheers,

Chris