Using Buttons on a Pointing Device

On a two-button mouse, the left button is the pick button, used to

Specify locations
Select objects for editing
Choose menu options and dialog box buttons and fields

The operation of the right button depends on context and can be used to

End a command in progress
Display a shortcut menu
Display the cursor menu
Display the Toolbars dialog box

The Microsoft IntelliMouse has a wheel between the left and right buttons. You can rotate this wheel to zoom in and out of a drawing or you can press and drag the wheel to pan in a drawing. The operation of additional buttons on a pointing device is defined in the AutoCAD LT menu file.