Texas Instruments TI-89 Titanium User Manual page 21

To return the Language mode setting to English, repeat the steps, selecting in
1:English
the Language field.
Using the Catalog to access commands
Use the Catalog to access a list of TI-89 Titanium commands, including functions,
instructions, and user-defined programs. Commands are listed alphabetically.
Commands not beginning with a letter are found at the end of the list (&, /, +, –, etc.).
The Catalog Help App includes details about each command.
Options not currently valid are grayed out. For example, the Flash Apps
( ...) menu option is grayed out if no Flash applications are installed on your TI-89
Titanium; the User-Defined ( †) menu option is grayed out if you have not created a
function or program.
Typing a letter takes you to the first command in the list starting with the same
Note:
letter.
Press Result
½
(displays Built-in commands)
Getting Started 18