2 texidoc = "Bar line extent can be customised and the customised value
3 must be respected when staff symbol is changed temporarily (e.g. to
4 simulate ledger lines of renaissance prints and manuscripts);
5 moreover, span bars should not enter the staves."
15 \override Staff.StaffSymbol.line-positions = #'(-4 -2 0 2 4 6)
21 \revert Staff.StaffSymbol.line-positions
30 \override Staff.StaffSymbol.line-positions = #'(-6 -4 -2 0 2 4)
34 \revert Staff.StaffSymbol.line-positions
43 \override BarLine.bar-extent = #'(-1 . 1.5)
59 \override BarLine.bar-extent = #'(0 . 0)
75 \override BarLine.bar-extent = #'(-2 . 0)