- Add support for an edition profiling attribute that can be used to

mark up parts that are only rendered either in the online or in
  the print editions of handbook

share/xml/freebsd45.dtd

@@ -30,6 +30,11 @@
 <!ENTITY % local.common.attrib "%xmlns.attrib;
 				%xmlns.xi.attrib;">
 
+<!ENTITY % edition.attrib
+	"edition	CDATA		#IMPLIED">
+
+<!ENTITY % local.effectivity.attrib "%edition.attrib;">
+
 <!ELEMENT xi:include (xi:fallback?)>
 
 <!ATTLIST xi:include