[Zope] Struggle to edit dtml in textarea

[pieter claassen]

For some reason if I do the following:

<textarea name="col1" rows="30" cols="120" ><dtml-var
expr="_.getitem('1_col',0)" html_quote></textarea>

I can edit the html but all dtml is interpreted.

I am trying to build a dtml page with which I can edit other pages:
1. Any recommendations on how to do this? (example of document_src in
dtml?)
2. How do then overwrite the previous page with the edited code?

Thanks,
Pieter