Calculator User Manual

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
lb
ar
: Tit
l
e "Examp
l
es"
: Item "Trig", t
: Item "Ca
l
c", c
: Item "Stop", Pexit
:En
d
T
b
ar
©
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
l
se
:
¦
Al
rea
d
y exists
: C
l
rErr
:En
d
Try
©
Note: See
ClrErr
and
PassErr
.