Johan, As far as I can see there are no generally-accepted, authoritative standards about formatting of the elements of chord notation.
There is an exhaustive book on chord notation, "Standardized Chord Symbol Notation: A Uniform System for the Music Profession", by Carl Brandt and Clinton Roemer. But this notation is not uniformly applied in practice. Thanks, Carl Sorensen _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user