Items available from the Object List window ( ) menu:

All

(Default) Lists all items in the scene.

None

Filters the Object List to display no individual objects. Items such as selection sets still display.

Basic Material

Toggles display of materials.

Camera

Toggles display of cameras.

Directional Light

Toggles display of lights.

Geometry

Toggles display of models.

Image Plane

Toggles display of image planes.

Stencil

Toggles display of stencils.

Subdivision Level

Toggles display of subdivision levels.

Transformation

Toggles display of transformation values for items in the 3D View (cameras, lights, and models. Turn on to view the transformation values for a model.