Control the dot/drawer using wasd on the keyboard. Make sure to turn it on using the on switch. You can switch between draw and cursor with the switch. And you can change the color. With these tools you can make almost any 30 by 30 pixel image such as the showcase image. To delete an image just switch to cursor mode and move the dot. To delete a pixel at a time just set the color to 0 and move it to what you want to delete.
For best experience set clock speed to 50.