Select an environment, shader, texture, or light to edit your parameters.
You must select an environment, shader, texture, or light in order to use the Control Window to edit its parameters, or to use many of the Multi-lister menu tools. You can select one or many shaders, texture, lights, or the environment.
To select a shader, light, texture, or the environment
If either the Control Window or Color Editor is open, its display updates with the parameters for the selected swatch in the Multi-lister.
If the selected environment, shader, light, or texture has a texture mapped to one of its parameters, the corresponding texture swatch in the Multi-lister is also selected and partially highlighted in white.