1.1.50 PropertyUnset
Remove the definition of a context
\property.
Properties:
name(symbol):
'PropertyUnsetName of this music object.
types(list):
'(layout-instruction-event general-music)The types of this music object; determines by what engraver this music expression is processed.
iterator-ctor(procedure):
ly:property-unset-iterator::constructorFunction to construct a
music-event-iteratorobject for this music.