-This is a separate program from @command{lilypond} itself, and is run on
-the command-line; for more information, see @ref{Command-line usage}.
+This is a separate program from @command{lilypond} itself, and is run
+on the command line; for more information, see @ref{Command-line
+usage}. If you have MacOS 10.3 or 10.4 and you have trouble running
+@code{lilypond-book}, see @ref{Setup for MacOS X}.