Texas Instruments TI-89, TI-92

Appendix A: Functions and Instructions 515

8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 515 of 132

Toolbar CATALOG

Toolbar

block

EndTBar

Creates a toolbar menu.

block can be either a single statement or a

sequence of statements separated with the “:”

character. The statements can be either Title

or Item.

Items must have labels. A Title must also have

a label if it does not have an item.

Program segment:

:Too

: Tit

e "Examp

es"

: Item "Trig", t

: Item "Ca

c", c

: Item "Stop", Pexit

:En

Note: When run in a program, this

segment creates a menu with three

choices that branch to three places in the

program.

Trace CATALOG

Trace

Draws a Smart Graph and places the trace

cursor on the first defined Y= function at the

previously defined cursor position, or at the

reset position if regraphing was necessary.

Allows operation of the cursor and most keys

when editing coordinate values. Several keys,

such as the function keys, O, and 3,

are not activated during trace.

Note: Press ¸ to resume operation.

Try CATALOG

Try

block1

Else

block2

EndTry

Executes block1 unless an error occurs.

Program execution transfers to block2 if an

error occurs in block1. Variable errornum

contains the error number to allow the

program to perform error recovery.

block1 and block2 can be either a single

statement or a series of statements separated

with the “:” character.

Program segment:

:Try

: NewFo

ld(

temp

)

: E

: ¦

rea

y exists

: C

rErr

:En

Try

Note: See ClrErr and PassErr.