ls
            by clients.</dd>
      <dt>Procedure</dt>
      <dd>
            A named operation on a service that may be the target of a remote procedure call.
            In this document, the terms method and procedure are used to mean the same thing.
        </dd>
      <dt>Method</dt>
      <dd>
            Same as Procedure.
        </dd>
      <dt>Call</dt>
      <dd>
            An invocation of a procedure on a service that results in a 
            sequential request-response transaction
        