-DOC_HTML += glossary.html
-DOC_HTML += tutorial.html
-DOC_HTML += howto-index.html
-DOC_HTML += howto/revert-branch-rebase.html
+
+ARTICLES = tutorial
+ARTICLES += cvs-migration
+ARTICLES += diffcore
+ARTICLES += howto-index
+ARTICLES += repository-layout
+ARTICLES += hooks
+# with their own formatting rules.
+SP_ARTICLES = glossary howto/revert-branch-rebase
+
+DOC_HTML += $(patsubst %,%.html,$(ARTICLES) $(SP_ARTICLES))