Forum OpenACS Q&A: Re: E-commerce 'category-browse-subcategory.tcl'

template::form is the original core code and ad_form is built on top of it. Either way, you should not have forms that don't use one of those.

If you don't like ad_form the acs-templating forms API is just as powerful just much more verbose.

In fact there are some things the ad_form apis can't do and when that happens you can just apply the acs-templating forms api where needed.