create-new-legend ("cnl")

See this command in the command table.

To access this command:

Format ribbon >> Overlays >> New Legend.
Using the command line, enter "create-new-legend"
Use the quick keys 'cnl'.
Attempt to create a new default legend in any 3D properties screen.
Various other system commands that make use of legends for display or reporting.
Display the Find Command screen, locate create-new-legend and click Run.

Command Overview

Displays the Create New Legend wizard for the creation of value, range and filter legends. For more information, press F1 when the screen displays.