@color(optional)Used to indicate visual appearance. Do not confuse this with the musical term 'color'
as used in pre-CMN notation.
@ho(optional)Records a horizontal adjustment to a feature’s programmatically-determined location
in
terms of staff interline distance; that is, in units of 1/2 the distance between adjacent
staff lines.
@vo(optional)Records the vertical adjustment of a feature’s programmatically-determined location
in
terms of staff interline distance; that is, in units of 1/2 the distance between adjacent
staff lines.