This is a windows-like shell for the TI-83+. It can do many things, including running Ion and up to five other Basic programs. Also included are six built-in apps: VARS Master, which can clear variables and perform garbage collects, PicView, which allows you to view any picture on your calculator, Prob Test, which will choose a random number between any two integers you want, String Saver, a program that can save, edit, and delete up to four strings, TI-Timer, that can either count or countdown from any number you choose, and GuessGame, a game where you must find a random number between 1 and 10, 1 and 100, 1 and 1000, or 1 and 1 million. Other features include changeable password protection, your choice of up to 10 different background images, screensavers (17 are already included, plus image previews), and a customizable text phrase that appears on the menu bar. Version 1.1 takes up less space than 1.0. All in all, this program takes up less than 4k!