Space does actually work, but when drawing, it takes the exact mouse pointer position, not the snapped-to-grid cursor (the white cross) position. This makes it basically impossible to get an accurate reading for drawing actions on the grid (unless you can do the rounding in your head, and your mouse pointer was close enough to the cursor at the time!).
Space does actually work, but when drawing, it takes the exact mouse pointer position, not the snapped-to-grid cursor (the white cross) position. This makes it basically impossible to get an accurate reading for drawing actions on the grid (unless you can do the rounding in your head, and your mouse pointer was close enough to the cursor at the time!).