(printKeyCancellation ,boolean? "Print restoration alterations before a key signature change. ")
(printPartCombineTexts ,boolean? "set Solo/A due texts in the part combiner?")
(printOctaveNames ,boolean? "Print octave marks for the NoteNames context.")
+
+ (proportionalNotationDuration ,ly:moment? "Global override for
+shortest-playing duration. This is used for switching on proportional
+notation.")
(recordEventSequence ,procedure? "When Recording_group_engraver
is in this context, then upon termination of the context, this
function is called with current context and a list of music objects.