The PBDOM_ENTITYREFERENCE class defines behavior for an XML entity reference node. It is a simple class intended primarily to help you insert entity references within element nodes as well as attribute nodes.When the PBDOM_BUILDER class parses an XML document and builds up the DOM tree, it completely expands entities as they are encountered in the DTD. Therefore, immediately after a PBDOM_DOCUMENT object is built using any of the PBDOM_BUILDER build methods, there are no entity reference nodes in the resulting document tree.
A PBDOM_ENTITYREFERENCE object can be created at any time and inserted into any document whether or not there is any corresponding DOM entity node representing the referenced entity in the document.
The PBDOM_ENTITYREFERENCE class has only methods that are inherited from PBDOM_OBJECT.
