Forum OpenACS Q&A: ad_page_contract blocking less than symbol in form data

In OpenACS 5.0, I'm trying to allow entry of less than and greater than symbols in an html form.

This is a legacy application using ad_page_contract. The  AllowedTag parameter has an * and I have tried adding the allhtml filter to the variable in ad_page_contract. I still get

    *  Value for abstract contains HTML tags

When I submit the form