Why Is Right-Click Different Than Left-Click?

Having two mouse buttons that do different things allows you to perform more tasks using your mouse, which can save you clicks and keyboard presses. Generally, most operating systems reserve the left mouse button as the “primary click” for selecting items on the screen or for opening apps or documents, and they reserve the right button as a “secondary click” used for canceling selections or for opening a context menu. A context menu is a list of options that changes depending on where you click or which application you’re using.