+# At the end of the run, the user is prompted whether or not to
+# remove the generated files.
+#
+# According to http://code.google.com/p/lilypond/issues/detail?id=1236
+# the location of the lilypond git tree is taken from $LILYPOND_GIT
+# if specified, otherwise it is auto-detected.
+#
+# It is assumed that compilation takes place in the build/
+# subdirectory, but this can be overridden by setting the environment
+# variable LILYPOND_BUILD_DIR.
+#
+# Similarly, output defaults to build/tempdocs/ but this can be
+# overridden by setting the environment variable LILYPOND_TEMPDOCS.