%xinclude.xmlns.attrib;
XInclude Namespace Pseudo-attribute
Put together all the parts of the XInclude namespace pseudo-attribute: the prefix and the
URI value.
Model
<!ENTITY % xinclude.xmlns.attrib "xmlns:%xinclude.prefix; CDATA #FIXED '%xinclude.xmlns;'" >
Expanded Model
xmlns:xi CDATA #FIXED 'http://www.w3.org/2001/XInclude'