What is that Ardour blue icon?

Hi!!!

I was just carefully exploring the screenshot Paul uploaded from his Ardour session, and I see two Ardour icons on the upper left corner of the screen, one is the usual red one, but then I see a blue one, and I don´t know what that one is?

http://www.ardour.org/files/ardour-2.5.png

Thx!

hahaha… I thought it looked familiar!

Good one! :wink:

the blue one is this: