Name: Uppercase Tester
Version: 1.0
Author: Nishad Phadke (nishad.phadke@hotmail.com)
Date: Nov. 27, 2010
Tested on TI-89 HW 2.00 OS 2.09.

Documentation:
1. Type in the function's name in the home screen.
2. Enter a string of length one to see if it is uppercase or not.
3. Press <enter>.

Examples:
isupper("a") --> false
isupper("X") --> true
isupper("&") --> false