xfce4-mixer documentation request

[Holger Jorra]

Hello list,

I'm searching for documentation for xfce4-mixer, maybe someone here can
help me out.

I would like to set certain switches like master and PCM on a value !=
0 on xfce start, or to change both with the green volume bar (wannabe
master).

Unfortunately there's neither a manpage for xfce4-mixer,
~/.config/xfce4/mixer/config.xml nor documentation at www.xfce.org. So
I have no clue how to do this.

At least a hint to the source code that parses the config.xml file
would be nice.

Regards
Holger

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