Optional
beam_Optional
beam_Whether to extend beams over rests. Default false.
Optional
groupsGroups of notes (fractions) to beam within a measure. List of fractions, each fraction being [nominator, denominator]. E.g. [[3,4],[1,4]] will beam the first 3 quarters of a measure, then the last quarter.
Optional
maintain_Whether to maintain stem direction of autoBeamed notes. Discouraged, reduces beams. Default false.
Whether to extend beams only over rests that are in the middle of a potential beam. Default false.