if your monitor is set to that, and my sig shows 9 lines on your screen, then you sig should show 8 lines on your screen. The limit is 5 lines, but I believe that 6 is permissable, and 7 is pushing it. It has no bearing on screen size. Besides, the last 2 lines are only size 1 font.

 

I'm gonna try it pretty soon. I'll post pics of the finished result.