From ElectraSoft: Mouse Button Control convert center middle mouse button single-click to left double-click and lets you use the home and arrow keys to move the mouse cursor one pixel at a time. Mouse Button Control converts Middle-Mouse-Button-Click to a double-click. It is as if you pressed the left-mouse-button two times very quickly. This is handy if you do not need the Middle-Mouse-Button, but do a lot of double-clicks.
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