@cancelaccid(optional)Determines where cautionary accidentals should be displayed at a key change.
Value conforms to data.CANCELACCID.
<att.keySig.vis>direct children@cancelaccid
@color(optional)Used to indicate visual appearance. Do not confuse this with the musical term 'color'
as used in pre-CMN notation.
Value conforms to data.COLOR.
@visible(optional)Indicates if a feature should be rendered when the notation is presented graphically
or sounded when it is presented in an aural form.
Value conforms to data.BOOLEAN.