press q to clear the board for line: use the up arrow to set position of origin of point, then use the down arrow key to set the movable position for barcode: h to set y position, then press l (lower case L) to set the movable position for diamond: left arrow to set first position, right arrow to set the movable position for square: s to set first position, d to set the next position for drawing: use your mouse to click
use your keyboard numbers (1,2,3,4,5) to choose which tool you want to use
