Texas Instruments TI-Nspire Reference Guide

TI-Nspire™ Reference Guide 57
Local
Catalog
>
Local Va r1 [, Va r2 ] [, Va r3 ] ...
Declares the specified vars as local variables. Those variables exist
only during evaluation of a function and are deleted when the
function finishes execution.
Note: Local variables save memory because they only exist
temporarily. Also, they do not disturb any existing global variable
values. Local variables must be used for For loops and for temporarily
saving values in a multi-line function since modifications on global
variables are not allowed in a function.
Note for entering the example: In the Calculator application
on the handheld, you can enter multi-line definitions by pressing @
instead of · at the end of each line. On the computer keyboard,
hold down Alt and press Enter.
Lock
Catalog
>
Lock Va r1 [, Va r2 ] [, Var 3] ...
Lock
Va r.
Locks the specified variables or variable group. Locked variables
cannot be modified or deleted.
You cannot lock or unlock the system variable Ans, and you cannot
lock the system variable groups stat. or tvm.
Note: The Lock command clears the Undo/Redo history when
applied to unlocked variables.
See unLock, page 109, and getLockInfo(), page 42.

Texas Instruments TI-Nspire Specifications

General

Type	Display
Form factor	Pocket
Product color	Blue, White
Display resolution	320 x 240 pixels
Display size (HxV) (imperial)	0 \
Compatible operating systems	Windows Vista/XP Mac OS X 10.4/10.5
Battery type	AAA
Number of batteries supported	4

Weight and Dimensions

Dimensions (WxDxH)	100 x 198.3 x 28.7 mm