The documentation of the non-standard key signature feature (in the
selected
snippets section of the Key Signatures section) gives an example of such a
key:
http://kainhofer.com/~lilypond/Documentation/user/lilypond/Displaying-
pitches.html#Key-signature
As you can see, the displayed alterations are just reversed compared to
the
list of alterations given. Is this an oversight or on purpose. If it's the
latter, a comment should be added to the snippet explaining that the
alterations need to be given in reversed order...