LilyPond Internals Reference: 2.2.57 Grace_beam_engraver

### 2.2.57 `Grace_beam_engraver`

Handle `Beam` events by engraving beams. If omitted, then notes are printed with flags instead of beams. Only engraves beams when we are at grace points in time.

Music types accepted: `beam-event`

Properties (read)

`baseMoment` (moment)

  Smallest unit of time that will stand on its own as a subdivided section.

`beamMelismaBusy` (boolean)

  Signal if a beam is present.

`beatStructure` (list)

  List of `baseMoment`s that are combined to make beats.

`subdivideBeams` (boolean)

  If set, multiple beams will be subdivided at `baseMoment` positions by only drawing one beam over the beat.

This engraver creates the following layout object(s): `Beam`.

`Grace_beam_engraver` is part of the following context(s) in `\layout`: `CueVoice`, `DrumVoice`, `GregorianTranscriptionVoice`, `KievanVoice`, `MensuralVoice`, `PetrucciVoice`, `StandaloneRhythmVoice`, `TabVoice`, `VaticanaVoice` and `Voice`.

#### LilyPond – Internals Reference v2.24.4 (stable-branch).