Press 1, 2 or 3 to make a shape. The keys 4, 5 and 6 are special and make a random shape. You can also write TAZ (For no reason) by pressing the a key and you can make a circle by pressing the k key and the l key is a non-alterable circle. You can alter the size of the pen by using z key (Higher) and x key (Lower). It is the same for the circle size, but instead the letters are q (Higher) and w (Lower). Again, it is the same to change the random shapes (4, 5 and 6), but instead the letters are n (Higher) and m (Lower). You can show the value of the variables by pressing the 0 key (Show the value) and the 9 key (Hide the value). It is a little buggy, so if it doesn't change to another shape and the pen just goes crazy, just spam 1, 2 or 3. You can use space to clear and if you want to use a or l you have the stop the project, clear and then press a or l.
Please read the instructions, they help a lot. So, I made this myself, because I was really bored.