Click t to go into builder mode click it again to view in full screen. There are 3 layers click 1 to select layer 1 and 2 for layer 2 and 3 for layer 3. Click on the palette on the right then use arrow keys to move the palette, move mouse pointer to the left side, the map, or click it then use arrow keys to move the screen. Hold space and click to quick build, you still have to click each space on the map. Green flag restarts the map.
