# File nqxml/document.rb, line 123
 def writeTo(io, prettify = false)
	    @entity.writeXMLTo(io, true)
	    io << "\n" if prettify
	    @children.each { | node |
		node.writeTo(io)
		io << "\n" if prettify
	    }
	    @entity.writeXMLTo(io, false)
	    io << "\n" if prettify
	end