Draw black lines with the mouse by clicking and dragging. Clear all black lines with the "C" key. The mouse will bounce off any black lines. Use the "P" key to toggle the pen so the mouse leaves a trail of where it has been. To make straight black lines, hold the Space key down while you are dragging the mouse. The line will draw when you release the Space key. This is a remix of DrMath's wonderful "Boundaries" project with a new creature costume and new logic to prevent most situations where the mouse gets stuck.