The height variable is vital to rendering the image correctly and represents the number of rows it draws. The default for this image is 100. The zoom is self-explanatory. If you press space, it clears the screen of anything else than the main picture, which sometimes happens.
This is just a very early test for a program that can open any photo. Hopefully in later versions I can make the "height" variable automatic. It provides a lot of fun though. There is only one picture now just to test it out with, but soon you will be able to do it with any photo. BTW, everything on the screen is drawn by pen.
