Why Are Only the Child Nodes Inserted?
When appending a document fragment to a node, only the child nodes of the document fragment (but not the document fragment itself) are inserted. Wouldn’t the parser check the owner document of these child nodes? Answer: A document fragment should not be bound to a root node, since, by definition, a fragment could very well be just a list of nodes. The root node, if any, should be considered a single child. That is, you could for example take all the lines of an Invoice document, and add them into a ProviderOrder document, without taking the invoice itself. How do we create a document fragment without root? As the XSLT processor does, so that we can append it to other documents.
