The Navigate Tool
The navigation tool is used to pan, rotate, and scale the view of a molecule.
If the "Display visual cues" box is checked, yellow arrows will display what type of navigation is taking place.
Clicking anywhere on the black display and dragging the mouse will tilt, and rotate the entire molecule (as shown below).
A molecule can also be rotated about an atom by clicking the atom and dragging the mouse. Depicted below, acetone is being rotated about its initial carbon.
Right clicking allows you to change the molecules location on the display. Double clicking the molecule will reset the molecule's view.
Using the middle scroll bar on a mouse will allow you to zoom in and out.