4 texidoc = "Note head lines (eg glissando)
5 run between centers of the note heads."
8 su = \notes{ \translator Staff = up}
9 sd = \notes{ \translator Staff = down}
15 \property PianoStaff.connectArpeggios = ##t
18 c4 d \sd b a g8 f16 e32 d \su g2 \glissando a,4 \sd \break a2. \su g4 \glissando f1
20 \context Staff = down {