Look at section 3.1.10, 'BaloonText'
https://lilypond.org/doc/v2.23/Documentation/internals-big-page.html#balloontext We still have break-visibility (vector): #<procedure 5575a26ab980 at /build/out/share/lilypond/current/scm/lily/output-lib.scm:2973:0 (grob)> ... Is there any chance to have this improved before the release? Being modest, just stripping `/build/out/...` would already count as an improvement to me... Werner
