print
function.
Each typically outputs its contents in the way
that they would appear in an XML document.print.XMLAttributeDef(x)
print.XMLElementContent(x)
print.XMLElementDef(x)
print.XMLEntity(x)
print.XMLEntityRef(x, indent= "")
print.XMLNode(x, ..., indent= "")
print.XMLOrContent(x)
print.XMLSequenceContent(x)
NULL
.xmlTreeParse