Doc:Glossary/Right Mouse Button

Right Mouse Button

Right Mouse Button; there are several uses, a major one being to click RMB to select objects in Object Mode and the elements of objects in Edit mode. However, an accidental click on RMB while traversing it over the 3D viewport can inadvertently invoke the Gestures option (see the section of that name in the User Manual Chapter on Interaction in 3D) for initializing a manipulation. This may result in unwanted changes in objects or elements of objects in position, angle, or scale. The Gestures section describes the use of LMB to select a type of manipulation, but RMB can be used in exactly the same way, so can produce the same accidental effect. If this happens, cancel the manipulation by clicking RMB or use Ctrl-Z after clicking LMB.