new (REXML::Light::Node)

    # File src/rexml/light/node.rb, line 21
                            def initialize node=nil
                                    @node = node
                                    if node.kind_of? String
                                            node = [ :text, node ]
                                    elsif node.nil?
                                            node = [ :document, nil, nil ]
                                    elsif node[0] == :start_element
                                            node[0] = :element
                                    elsif node[0] == :start_doctype
                                            node[0] = :doctype
                                    elsif node[0] == :start_document
                                            node[0] = :document
                                    end
                            end