According to lilypond usage 5.2
- Define
mBreak = { \break }
and insert \mBreak
in the input file whenever the manuscript has a line break. This
makes it much easier to compare the LilyPond music to the original
music. When you are finished proofreading your score, you may
define mBreak = { }
to remove all those line breaks. This
will allow LilyPond to place line breaks wherever it feels are
best.
I coded:
\version 2.13.61
define mBreak = {\break}
\relative c, { c d e f g a b \mBreak b b a a }
I got the following error:
C:/Documents and Settings/Administrator/Desktop/LILY_POND/little-dream.ly:16:7: error: syntax error, unexpected STRING, expecting SCM_IDENTIFIER or SCM_TOKEN or '='
define
mBreak = {\break}
Question: what is the correct syntax?