A very nice agenda program. Easy controls and 7 customizable periods. However, it uses 7 strings, 7 functions, and several variables. If you are using your calc for actual graphing in math class, don't use this program. No constant blinking but whenever you delete a class or read a class it will redraw the background and text. Very nice graphics that are easy to read and not so detailed that the program goes slow. Overall good program.