CompuServe Messages

I'd like to request some way to create "Hidden Fields" or codes in PW. Providing such a feature could easily allow user-extendable functions via ARexx such as table-of-contents generation, indexes, etc. Such fields wouldn't print, and you could figure out a way to make them editable vs. non-display. That doesn't seem like a lot of development effort and would tap into the potential of your users. What do you say?