IntGrid layers are grids ofInteger values (ie. 0, 1, 2, etc.). Each value has an associated custom color.
How to use them
Open theLAYERS panelCreate anINT GRID layerOptionally, you may adjust settings or add valuesUseLEFT click to drawUseRIGHT click to eraseHoldSHIFT +click and drag to draw a rectangle (right click to erase)UseSHIFT +a single click to fill an entire area