Whats this?

[Magic]

http://i180.photobucket.com/albums/x129/barcetabrian/untitled-1.jpg

I have never seen this before?
What is it and what does it do?


Sorry, I am paranoid with all the viruses going around!

[Matt]

It's a popup which appears when you click one of the "Formatting mode" options to the left of the BB Code buttons on the reply screen.