XML::LibXML::DocumentFragment(3pm) on Linux
The text 940181170a39, as Debian 4.0 (Etch) shipped it.
XML::LibXML's DOM L2 Document Fragment Implementation This class is a helper class as described in the DOM Level 2 Specification. It is implemented as a node without name. All adding, inserting or replacing functions are aware of document fragments now. As well all unbound nodes (all nodes that do not belong to any document subtree) are implicit members of document fragments.