The brush tool can be quickly equipped by selecting the polygon that you'd like to edit, and hitting E on your keyboard. This is often the fastest way to smooth out the borders of a polygon, or punch holes in a polygon mask.
Increase/decrease brush tool size
When the brush tool is equipped, you can choose from the round or square brush tips at the top of the page, and use the
]keys to adjust the tip size.
Updated 7 months ago