- (type ,symbol? "The type of this music object. Determines iteration in some cases.")
- (types ,list? "The types of this music
-object; determines by what engraver this music expression is
-processed.")
+ (quoted-music-name ,string? "The name of the voice to quote.")
+ (quoted-voice-direction ,ly:dir? "Should the quoted voice be up-stem or down-stem?")
+ (quoted-context-type ,symbol? "The name of the context to direct quotes to, eg., @code{Voice}.")
+ (quoted-context-id ,string? "The id of the context to direct quotes to, eg., @code{cue}.")
+ (to-relative-callback ,procedure? "How to transform a piece of music to relative pitches")