[Zope] Looking for different style

[cuiod-tec Jens Gelhaar]

I need a better way to render a DTMLDocument and store the result in
variable than
<dtml-let variable="_['documentname']">
but I do not like the style, it looks clumsy. Is there an another way? I
would think something like documentname(...), but the acquisition does not
work.

Thanks Jens