A mouse is a handheld input device you roll across a flat surface (such as a desk or a mouse pad) to position the mouse pointer , the small symbol that indicates the pointer's relative position on the desktop. When you move the mouse, the mouse pointer on the screen moves in the same direction. The shape of the mouse pointer changes to indicate different activities. Once you move the mouse pointer to a desired position on the screen, you use the mouse buttons , right or left, to tell your computer what you want it to do.
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