Attributes for the <xi:include> element.
<!ENTITY % include-atts "accept CDATA #IMPLIED accept-language CDATA #IMPLIED encoding CDATA #IMPLIED href CDATA #IMPLIED parse (text | xml) 'xml' xpointer CDATA #IMPLIED %xinclude.xmlns.attrib;" >
accept CDATA #IMPLIED accept-language CDATA #IMPLIED encoding CDATA #IMPLIED href CDATA #IMPLIED parse (text | xml) 'xml' xpointer CDATA #IMPLIED xmlns:xi CDATA #FIXED 'http://www.w3.org/2001/XInclude'