4.12.—(1) The court may specify the time as well as the date by which a document must be—
(a)served under rule 4.3 or rule 4.8; or
(b)transmitted by electronic means, if it is served under rule 4.6.
(2) The court may treat a document as served if the addressee responds to it even if it was not served in accordance with the rules in this Part.