VMD provides several methods for the user to control and interact with the molecular display. The primary methods are by using the mouse, either in the graphics window or in the different graphical user interface (GUI) forms provided by the program. In addition to the mouse, VMD also supports a number of more advanced input devices such as the Spaceball, Magellan, and Phantom, which provide the ability to manipulate molecules with six degrees of freedom. Some devices such as the Phantom can also provide haptic (sense of touch) force feedback. VMD also provides a text console interface for executing built-in commands or running scripts. This chapter describes how to use the mouse-based user interfaces, and some of the advanced input devices supported in VMD. The the text and scripting interface is described fully in chapter 9.