Manual:Viewport Label Menu

Size
Maximize the viewport. Once the view port is maximized this entry turns to 'restore'. You can also maximize/restore the viewport left clicking the view port label.

Appearance

 * Smooth Shaded:Show the models with a smooth appearance.
 * Flat Shaded:Show the models with a flat shaded (faceted) appearance. Flat shading is computationally cheaper than smooth shading.
 * Wireframe:Represent the models as outlined polygons.

Framming

 * Frame Scene:Adjust the camera to fit the whole scene.
 * Frame Selected:Adjust the camera to fit the selected object.

Properties
Opens the view port properties dialog.