As of 2007 (and roughly since the late 1990s), users most commonly employ the second button to invoke a contextual menu in the computer's software user interface, which contains options specifically tailored to the interface element over which the mouse cursor currently sits.
Users most commonly employ the second button to invoke a contextual menu in the computer's software user interface. This is as of 2007 (and roughly since the late 1990s). The computer's software user interface contains options. These options are specifically tailored to the interface element over which the mouse cursor currently sits.