3D Navigation commands

You can perform 3D navigation operations through the mouse buttons.

Rotate about view: press and hold the right mouse button, then move the mouse.
Pan: press and hold the mouse wheel button, then move the mouse.
Zoom in: push the mouse wheel up.
Zoom in: pull the mouse wheel down.
Define the center of rotation: hover the mouse cursor over the object surface where you want to specify the center of rotation of the scene, then press the mouse wheel button.