< Well you lost 20pix, and win lot of surface with every tab.
@PaQ
Maybe a cool trick will be satisfy all people ;)
The "Vertical slots" appear over "draw screen" as soon as the mouse arrives one the right Panel !
And disapear when the mouse return on the canvas!

So you have your lot of space for your tabs, and I have my "big screen" on my little latop for draw! :D