Create a 3D environment

Double-click the environment swatch in the Multi-lister to open the Control Window.
See Control Window in Render > Multi-lister.
In the Control Window, click the Map button (to the right of the Color parameter) to open the Texture Procedures window.
Open a texture procedures window
In the Texture Procedures window, click Environments to open the environment texture section.
See Environment parameters in Render > Multi-lister.
Click the button of the environment texture you want to use.
An environment texture swatch appears in the Multi-lister, the environment texture is displayed on the environment swatch, and the Control Window updates to display the environment texture parameters.
Customize the environment texture by editing the parameters in the Control Window.