+# SGML Documentation
+#
+################################################################################
+
+.PHONY: dvi ps html pdf rtf
+
+ifneq "$(SGML_DOC)" ""
+
+all :: $(SGMLDocWays)
+
+# multi-file SGML document: main document name is specified in $(SGML_DOC),
+# sub-documents (.sgml files) listed in $(SGML_SRCS).
+
+ifeq "$(SGML_SRCS)" ""
+SGML_SRCS = $(wildcard *.sgml)
+endif
+
+SGML_TEX = $(addsuffix .tex,$(SGML_DOC))
+SGML_DVI = $(addsuffix .dvi,$(SGML_DOC))
+SGML_PS = $(addsuffix .ps,$(SGML_DOC))
+SGML_PDF = $(addsuffix .pdf,$(SGML_DOC))
+SGML_RTF = $(addsuffix .rtf,$(SGML_DOC))
+SGML_HTML = $(addsuffix .html,$(SGML_DOC))
+# HTML output goes in a subdirectory on its own.
+SGML_TEXT = $(addsuffix .txt,$(SGML_DOC))
+
+$(SGML_DVI) $(SGML_PS) $(SGML_HTML) $(SGML_TEXT) $(SGML_PDF) :: $(SGML_SRCS)
+
+dvi :: $(SGML_DVI)
+ps :: $(SGML_PS)
+pdf :: $(SGML_PDF)
+rtf :: $(SGML_RTF)
+html :: $(SGML_HTML)
+txt :: $(SGML_TEXT)
+
+CLEAN_FILES += $(SGML_TEXT) $(SGML_TEX) $(SGML_PS) $(SGML_DVI) $(SGML_PDF) $(SGML_RTF) $(SGML_HTML) $(SGML_DOC)-*.html
+# can't use $(SGML_SRCS) here, it was maybe used elsewhere
+
+extraclean ::
+ $(RM) -rf DBTOHTML_OUTPUT_*
+ $(RM) -rf *.junk/
+ $(RM) -rf $(SGML_DOC)
+endif
+
+################################################################################
+#