@dots.ges(optional)Number of dots required for a gestural duration when different from that of the
written duration.
@dur.ges(optional)Records performed duration information that differs from the written duration; @dur.ges allows
the same datatypes as @dur. Values of @dur.ges that require dots should also use @dots.ges.
@dur.metrical(optional)Duration as a count of units provided in the time signature denominator.
@dur.ppq(optional)Duration recorded as pulses-per-quarter note, e.g., MIDI clicks or MusicXML
divisions.
@dur.real(optional)Duration in seconds, e.g., 1.732.
@tstamp.ges(optional)Encodes the onset time in terms of musical time, i.e., beats[.fractional beat part],
as expressed in the written time signature.
@tstamp.real(optional)Records the onset time in terms of ISO time.
@tstamp2.ges(optional)Encodes the ending point of an event, i.e., a count of measures plus a beat location
in the ending measure.
@tstamp2.real(optional)Records the ending point of an event in terms of ISO time.