Texas Instruments TI-83 Plus Manual Book page 10

Using Menus and Options
To select a menu option on the TI-83 Plus, either move the cursor
to highlight the option and press Í, or press the number that
corresponds to the menu option.
To select an option defined at the bottom of the screen (such as
associated with the q key), press the graphing key
EXIT
directly below the option.
o p q r s
TI-83 Plus TImeSpan™ Viewer Application
Press a graphing key to
select one of these options.
For example, press q to
select EXIT.
Page 10