Well, I was looking about to buy a tablet and draw my own visual coding diagrams, but I figured there had to be a software choice already. Plus, I would like to change the code and the visuals would also change. Then I found UML/MDD and looked for a free version of UML embedded. Naturally, the good wiki pages listed Artisan Studio Uno as "free-ware" without a trial expiration date or lack of capabilities. I looked at this site to see what you guys have looked at in the past and the best thread was http://www.8052.com/forum/read/128718 , but you guys are a little out of date with this. Poseidon also offers an embedded version that comes at a hefty price. More can be read about it here: http://embedded-computing.com/artisan-a...studio-uno and downloaded after registration here: http://www.artisansoftwaretools.com/studiouno . As far as I can tell, it just lacks the multi-user support and integration with other group members.