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1.1.59 OptionalMaterialEvent

Start or stop optional material.

Event classes: music-event, optional-material-event, span-event and StreamEvent.

Accepted by: Optional_material_bracket_engraver.

Properties:

name (symbol):

'OptionalMaterialEvent

Name of this music object.

types (list):

'(optional-material-event span-event event)

The types of this music object; determines by what engraver this music expression is processed.