In Large Canvas mode,
almost the entire image window is available for painting, but not
all Paint options are available. You can still change the brush
characteristics, medium, and show options. You can also save, restore,
and wipe the canvas.
To display the large canvas:
Click Paint.
Click Canvas.
Swipe your cursor anywhere on the right
edge of the screen, or press Esc to
toggle between the large canvas and Paint menu.
