XML Include

XML Inclusion (XInclude) specifies a processing model and syntax for general purpose inclusion. Inclusion is accomplished by merging a number of XML Infosets into a single composite Infoset. Specification of the XML documents (infosets) to be merged and controlled  over the merging process uses an XML-friendly syntax (elements, attributes, URI References). The general purpose inclusion mechanism is usable in well-formed, but not necessarily valid,  XML documents. XInclude provides a generic mechanism for merging XML documents (as represented by their information sets). The syntax leverages existing XML constructs - elements, attributes, and URI references .

XML Include is a work product of the XML Core Working Group of W3C's Architecture domain.