Edgeslide for Mac
Slide the edge.
Volume on the right edge of your trackpad. Brightness on the left.
01 Right edge
Volume.
Slide one finger up the right edge of your trackpad to turn it up, down to turn it down. A glass level appears on that side of your screen while you slide.
Try it: drag the right edge of the trackpad.
02 Left edge
Brightness.
The same move on the left edge dims or brightens your built-in display. Your pointer stays exactly where it is.
03 Haptics
Feel every step.
The trackpad clicks softly at each of 16 steps, so your eyes can stay on your work. Choose Subtle, Light, Medium or Firm, or turn it off.