2 more reasons why 1bit is needed: - some type design applications only accept 1-bit clipboard content to be pasted (in the background for tracing). - I design/produce pixel fonts and symbols for consumer products: very often in 1-bit space. The Paint Brush and the Pixel tools should get special behavior in 1-bit mode: when starting to paint on a black pixel it should work as an eraser. And I wish the would be a way to make straight diagonal lines drawn with these tool snap live to grid-friendly angles. (1:1 (45 degree), 1:2, 1:3, 1:4, 1:6, 1:6) so that diagonal bitmap lines get perfect patters.