n a node with a b child, and abstract away some details of the AXML notation [3]. A. ActiveXML documents ActiveXML documents are XML documents including some special elements labeled sc (for service call). We now describe the basic features of the language as they have been laid out in [3]. Elements labeled sc describe a given Web service that should be called, and may include XML parameters of the call. When the call is activated, a request message (including the parameters) is sent to the Web service, and when the results are received, they are inserted in the AXML document as siblings of the sc node.