=head1 SYNOPSIS
- convert-mudela [options] [files]
+ convert-mudela [options] [file]
=head1 DESCRIPTION
+If no file is given, input is taken from the standard input
+
mudela-book runs LilyPond on fragments of mudela in your source file,
and produces a LaTeXable document, with formatted music.
=item B<--outname>
-The name of TeX file to output
+The name of TeX file to output. If none is given, the output is
+printed on stdout.
=item B<--outdir>