Before changing the background, make sure that photometric
lighting is enabled.
Use the UNITS command and set the Lighting to International or
American.
Enter LIGHTINGUNITS at the command prompt, then enter a 1 or 2
and press ENTER.
ClickView
menu Named
Views.At the Command prompt, enter view.
In the View Manager, click the view name you want to change. If
the view isn’t already displayed, expand the appropriate View list,
and then click a view name.
In the Properties panel, click the Background Override
field.
Select Sun&Sky from the Background Override drop-down
list.
In the Adjust Sun & Sky Background dialog box, specify the
desired options for the background.