Adam,
Thanks. Having thought a bit more about my request, I would like to refine it somewhat. I think it will be easier, in fact.
What we really need is for the "Text" button on the bottom to just show a blank textarea instead, that is exposed via the API to the buttons. That way, the content of the "Text" textarea would be filled via code from a custom button.
hope you hadn't already completed yesterday's request.
Ken Schwartz