This disables TeX output. If you have a \midi definition, it will do
the midi output only.
-=item B<-d,--debug>,
+=item B<-d,--dependencies>
+
+Also output rules to be included in Makefile.
+
+=item B<-D,--debug>,
Turn debugging info on. GNU LilyPond reads the file F<.dstreamrc>,
which lists what functions and classes may produce copious debugging