xbindkeys

Re: Great! What about 'NoSymbols'?
NoSymbols appears when there's no keysym name mapped to keycode.

You can assign a keysymname to keycode with xmodmap.
Example for my keyboard :

xmodmap -e "keycode 222 = XF86PowerOff"
xmodmap -e "keycode 223 = XF86Sleep"
xmodmap -e "keycode 227 = XF86WakeUp"

Put this commands lines in your ~/.xsession or elsewhere
teyr're executed.

Keysymname can be found in X11/keysymdef.h or in
XRoot/lib/X11/XKeysymDB or man xmodmap.

Great! What about 'NoSymbols'?
Excellent - just what I needed when a friend of mine brought
me a replacemente US keyboard (Can't get US keycap kbd in
Argentina) with all the extra winkeys. Be sure to check the
example layouts on the page - saves a lot of work.

The last example was the one that fitted my case best,
so I adapted that one. Several key were marked 'NoSymbol' -
why is that? One is the 'Standby' or 'Sleep' key. I recognized
them by the scan codes I'd obtained through xev.

Re: Useful program
In version 1.3.0 and later, xbindkeys does not pay any more attention to NumLock, CapsLock and ScrollLock modifiers.

Re: Useful program
Well, if you have numlock enabled, you have to specifie mod2 modifier in the key line.
In all cases, you can identify what key combination you have to use with --key or --multikey options.

Useful program
This is a great program, especially for the keyboards with extra keys like volume adjustments, etc.

The documentation was a little weak, but after
a little trial and error I figured out what everything in the config file meant. It was originally
not clear that every defined keypress also depended on the state of numlock, capslock, etc