Texas Instruments Titanium TI-89, User Manual

Page: 565 / 977

Programming 562
4. Press
¸
(after typing in an input box such as
Variable
, you must press
¸
twice) to display an empty “template.”
You can now use the Program Editor as described in the remaining sections of this
module.
Note:
A program (or function) is saved automatically as you type. You do not need to
save it manually before leaving the Program Editor, starting a new program, or
opening a previous one.
Resuming the Current Program
You can leave the Program Editor and go to another application at any time. To return to
the program or function that was displayed when you left the Program Editor, launch
Program Editor again and select
1:Current
.
Variable Type a variable name for the program or function.
If you specify a variable that already exists, an error message
will be displayed when you press
¸
. When you press
N
or
¸
to acknowledge the error, the NEW dialog box is
redisplayed.
Item Lets you:
This is the template for a
program. Functions have a
similar template.