The "Display" panel is used both for worlds and PHXs. It lets you choose from among various display options in order to show only specific elements in a scene.
Note: the effects of some of these options may depend on the capabilities of your computer's video card.
Wire Frame: on-screen rendering is performed using a wire frame display.
Texture Filtering: let you filter texture rendering.
Display Grid: shows/hides the reference grid on the view.
Shadows: shows/hides shadows.
Display Physics geometries: shows/hides physics geometries on the screen.
Display render models: shows/hides rendered geometries.
Display rigid body links: shows/hides the link (segment) that connects a rigid body type object to a physical geometry.
Display joint links: shows/hides the link (segment) that connects a joint-type object to a rigid body.
Display joint axis limits: shows/hides a joint's freedom angle.
Always visible: the links between solids/joints and geometries are always visible.
Ambient light: world's ambient light color.