;;
(gap ,ly:dimension? "Size of a gap in a variable symbol.")
(gap-count ,integer? "Number of gapped beams for tremolo.")
+ (glissando-skip ,boolean? "Should this @code{NoteHead} be skipped
+by glissandi?")
(glyph ,string? "A string determining what @q{style} of glyph is
typeset. Valid choices depend on the function that is reading this
property.")