diff --git a/Makefile b/Makefile
index 9c6776e5970b38d0a8de8d35680aa83d54f41c01..e830bc7445c5753b29b6bb329ec8d977557df97b 100644 (file)
--- a/Makefile
+++ b/Makefile
#
# Define ASCIIDOC8 if you want to format documentation with AsciiDoc 8
#
+# Define DOCBOOK_XSL_172 if you want to format man pages with DocBook XSL v1.72.
+#
# Define NO_PERL_MAKEMAKER if you cannot use Makefiles generated by perl's
# MakeMaker (e.g. using ActiveState under Cygwin).
#