Section “Troubleshooting” in Application Usage - LilyPond

Chapter 2: Updating files with convert-ly 17
\magnify isn't changed to \fontsize.
- \magnify #m => \fontsize #f, where f = 6ln(m)/ln(2)
remove-tag isn't changed.
- \applyMusic #(remove-tag '. . .) => \keepWithTag #'. . .
first-page-number isn't changed.
- first-page-number no => print-first-page-number = ##f
Line breaks in header strings aren't converted.
- \\\\ as line break in \header strings => \markup \center-align <
"First Line" "Second Line" >
Crescendo and decrescendo terminators aren't converted.
- \rced => \!
- \rc => \!
2.2->2.4:
\turnOff (used in \set Staff.VoltaBracket = \turnOff) is not properly
converted.
2.4.2->2.5.9
\markup{ \center-align } should be converted to:
\markup{ \center-align {\line { ... }} }
but now, \line is missing.
2.4->2.6
Special LaTeX characters such as $~$ in text are not converted to UTF8.
2.8
\score{} must now begin with a music expression. Anything else
(particularly \header{}) must come after the music.