Application Guide

158 Using Variables
2. Click an option to select it.
Automatic Sliders in Graphs
Sliders can be created for you automatically in the Graphs application and in the
analytic window of the Geometry application. You are offered automatic sliders when
you define certain functions, equations, or sequences that refer to undefined variables.
Locking and Unlocking Variables
Locking lets you protect variables from modification or deletion. Locking prevents
unintended changes to a variable.
Time and altitude lists can be locked to ensure problem
fidelity.