- (,ly:slur::outside-slur-callback . ,ly:slur::pure-outside-slur-callback)
- (,ly:stem::height . ,ly:stem::pure-height)
- (,ly:rest::height . ,ly:rest::pure-height)
+ (,ly:axis-group-interface::calc-next-staff-spacing . ,ly:axis-group-interface::calc-pure-next-staff-spacing)
+ (,ly:axis-group-interface::height . ,ly:axis-group-interface::pure-height)