Thanks for that Will. It works great with the textbox included.

I don't know if it's possible to have the smaller popup window open instead of a full page or not for the sake of consistency with the normal editor. Don't spend a lot of time on it if it is hard to do.

A few things I noticed was one which is little thing, the heading of the textbox shouldn't have HTML in it since it's TiddlyWiki markup. Also the textbox has a little graphic beside with overlapping page symbols that creates a popup with embed code for swf in it.

TW Math has moved from under construction to almost beta stage, Have another look to see the results of some of your hard work. The 'See Quick Demo' should tempt even the most disinterested to try it:-) let me know your overall impression.

http://twmath.tiddlyspot.com/

Thanks again, Morris