4 Custodes may be engraved in various styles.
10 \consists Custos_engraver
16 \override Staff.Custos #'neutral-position = #4
18 \override Staff.Custos #'style = #'hufnagel
22 \override Staff.Custos #'style = #'medicaea
26 \override Staff.Custos #'style = #'vaticana
30 \override Staff.Custos #'style = #'mensural