4 Bar numbers can also be printed at regular intervals.
11 \context Staff \notes \transpose c c' {
12 \override Score.BarNumber #'break-visibility = #end-of-line-invisible
13 \set Score.barNumberVisibility = #(every-nth-bar-number-visible 4)
14 \override Score.BarNumber #'print-function =
15 #(make-stencil-boxer 0.1 0.25 0.25 Text_item::print)
16 \override Score.BarNumber #'font-size = #2
18 \repeat unfold 9 { c1 } \bar "|."