You
can display context help for buttons or commands.
For an available button, right-click that button.
If a button is unavailable, select one or more objects relevant
to the operation of the button. For example, the Describe button
appears dimmed until you select a type object that can be described.
To display button help for an available command, click the menu,
use the arrow keys to navigate to the subcommand of interest, and press F1.