Catalog; Built-In Functions And Commands; User-Defined Functions And Programs; Figure 8.1: Catalog - Texas Instruments TI-89 Developer's Manual

Chapter 8: Integrating a Flash Application
8.3.

Catalog

8.3.1.

Built-in Functions and Commands

Pressing the ½ key displays the operating system's built-in functions and
commands. As the cursor is moved through the list, help for the particular
function or command is displayed in the status line as shown in Figure 8.1.
F1: Help on the Catalog toolbar displays a catalog help dialog box that contains
the help message from the status line (including text that may have been
truncated due to the size limitations of the status line) as shown in Figure 8.2.
8.3.2.

User-Defined Functions and Programs

User-defined functions and programs can utilize the status line help and F1: Help
by placing a comment as the first statement of the function or program as shown
in Figure 8.3. The comment text will be the help message displayed in the status
line and in the F1: Help dialog. Once in the catalog, if any user-defined functions
or programs exist then the F4: User-Defined catalog toolbar selection item will be
available. The † function key will display the user-defined functions and
TI-89 / TI-92 Plus Developer Guide

Figure 8.1: Catalog

Figure 8.2: Catalog Help Dialog

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Beta Version January 26, 2001