Special keys on Logitech K350 keyboard

[margrave]

I bought a Logitech K350 keyboard. It has a bunch of "special" keys":

Media Center
Music
Calculator
Volume up/down/mute
Play/stop/next/previous
Sleep
​

Those all work ... though I have no use for them.
It also has:

Camera
Zoom in/out
Icon with a gear in front of a generic "document"
Icon with what might be a stack of three cards (or three display screens)?
​

None of the buttons in that last group do anything.
And that's good! Because I want to hijack those to do other things of my own choosing.
But how?

 

[derekimo]

Installing setpoint will give a bunch of options for doing that,

Wireless Keyboard K350 - Logitech Support

And your manual,

http://www.logitech.com/repository/1408/pdf/24503.1.0.pdf

Icon with a gear in front of a generic "document"
Icon with what might be a stack of three cards (or three display screens)?

The one with the gear is gadgets, the other is flip 3D.