# File temp/document.rb, line 161
    def write( output=$stdout, indent_level=-1, transitive=false, ie_hack=false )
      output = Output.new( output, xml_decl.encoding ) if xml_decl.encoding != "UTF-8" && !output.kind_of?(Output)
      @children.each { |node|
        indent( output, indent_level ) if node.node_type == :element
        if node.write( output, indent_level, transitive, ie_hack )
          output << "\n" unless indent_level<0 or node == @children[-1]
        end
      }
    end