And (maybe even more important): what code did produce that output?
Here's bar 711. Please note that this code is being generated by my
algorithmic composition software, slippery chicken, though I'm not
sure that makes a difference.
r8 < d' fs'\harmonic \parenthesize \tweak font-size -2 fs''' >4.~ (
^\markup { \teeny "III" } \pp \> < d' fs'\harmonic \parenthesize
\tweak font-size -2 fs''' >16 \pppp \< < f' bf'\harmonic
\parenthesize \tweak font-size -2 f''' >4.. ^\noise ) ^\markup {
\teeny "III" } \pp \! \mark \markup{ \box \bold \abs-fontsize #18
3.2.3 } |