Will clear any text that was on the home screen before the command was executed.
On the TI-84, the Home Screen is the IO Screen. However, the TI-89 separates the two screens, so ClrIO will clear any program output, and ClrHome will only clear the Home Screen.
:prgmCLRHOME :Output(1,1,"1234567890123456 :Output(2,1,"7890123456789012 :Output(3,1,"3456789012345678 :Pause :ClrHome
This program will display a series of numbers on the calculator screen. When the user presses "ENTER", the text will be cleared.
:clrhome() :Prgm :Output 1,1,"1234567890123456 :Output 20,1,"7890123456789012 :ClrHome :EndPrgm