...If you don't do this, the graph screen will still contain the text that was shown at the time of exiting.
You fix this by starting the program and exiting right (with the enter) this time.
The test-cheat sheets were tested on a TI-84+ only.
It should also support the TI-83+ (at least).
To run the program, you must have Python installed (https://www.python.org/).