[development] form_markup

I've opened an issue, but meanwhile, has anyone used form_markup - d6? I enabled it, the prefix/suffix fields appear when I edit a cck field. I put markup in. Save. Clear cache (just in case). And the node/add and edit forms don't change at all. I need to plant a line of textual instruction prior to the start of a series of groups on the form, and was hoping not to have to theme just to do that. Unfortunately, there's no cck markup type field.