Application Guide

49 Variables Overview
The column shows the list elements.
Locking and Unlocking Variables
Locking a variable protects it from modification or deletion, and prevents unintended
changes to a defined variable. For example, you may want to lock variables that define
time or altitude to ensure integrity.
You cannot lock the following variables:
• System variable ans
• stat. and tvm. variable groups
Locking Variables
1. Go to the Calculator application, and tap the entry line to show the keyboard.
2. Tap Tools .
3. Go to Actions, and then tap Lock.
4. Tap Lock Variable to select the function and insert it into the entry line.
5. Tap , and then tap the variable name you want to lock.
Note: You can also type the variable name in the entry line.
6. Tap ENTER.
The result Done indicates the variable is locked.