How to mod: Where is the debugger demo vid?

I remember that there was a video oh how to use the UI mod debugger thingy, but I can't seem to find it.

Anyone know what happened to it?

Not sure if there is one but you could Google coherent ui debugger tutorial

It's the same debugger that chrome uses.
https://developers.google.com/chrome-developer-tools/
http://www.youtube.com/results?search_query=chrome%20debugger%20tutorial&sm=1

Actually it's an older version so it's similar but with not as many features and the buttons are in different places.