3 Arpeggios are supported, both cross-staff and broken single staff.
11 \context Staff=one \notes\relative c''{
12 \context Voice < fis,-\arpeggio d a >
13 %%\property PianoStaff.SpanArpeggio \override #'connect = ##t
14 \property PianoStaff.connectArpeggios = ##t
17 \context Staff=two \notes\relative c{
19 \context Voice < g b d-\arpeggio >