Instructions
Use "W," "A," "S" and "D" to move to the area you want to brick. Press the "Enter" key on the number pad to place a brick.
Use the "7" and "9" keys to move bricks. Press any of the numbers between "1" and "6" on the number pad to rotate bricks.
Use the "0" key on the number pad to make a brick become stale and cancel it. Place another by pressing "Enter" again on the number pad.