This is a tutorial on using xLIB and BASIC to create 3 and 4 level grayscale on your 83+/SE or 84+/SE calculator. Using some of the best methods that the author knows you too can create beautiful games like Reuben Quest on your 83+/SE or 84+/SE calculator! 3 and 4 level instructions included, also included are files to make a 4 level grayscale tree on your 83+/SE or 84+/SE calculator!