To Preview Files
1. Click 
on the Quick Access toolbar or > Open. The File Open dialog box opens.
on the Quick Access toolbar or > Open. The File Open dialog box opens.2. Select the file from the file list or type the file name in the File name box.
3. Click Preview. The object appears in the preview area.
4. To change the preview configuration, right-click, and choose your preferred settings from the shortcut menu:
◦ Display style:
▪ Shaded (default)
▪ No Hidden
▪ Hidden Line
▪ Wireframe
◦ Projection style:
▪ Orthographic (default)
▪ Perspective
◦ Frame rate:
▪ Frames per second
◦ View type:
▪ Dynamic
▪ Anchored
▪ Delayed
▪ Velocity
▪ Fly Through
▪ Standard (default)
5. To return to the default preview orientation, right-click, and choose Refit from the shortcut menu.