4.—(1) References in this Part to service under these Rules include service under any enactment applied by these Rules.
(2) References in this Part to a requirement that a document be served on a person include any requirement that the document be supplied to the person, however expressed.
(3) References in this Part to a person’s agreement to the service of a document in a particular way include his agreement that any document of a description specified by him may be served in that way.