lists all different variables, functions and options available in
LilyPond. It is written as a HTML document, which is available
@c leave the @uref as one long line.
-@uref{http://@/lilypond@/.org/@/doc/@/v2.10/@/Documentation/@/user/@/lilypond@/-internals/,on@/-line},
+@uref{http://@/lilypond@/.org/@/doc/@/stable/@/Documentation/@/user/@/lilypond@/-internals/,on@/-line},
but is also included with the LilyPond documentation package.
There are four areas where the default settings may be changed: