Nothing in this Order affects the inherent power of the Court:
(a) to dismiss a proceeding for want of prosecution; or
(b) to order that, on the failure of a party:
(i) to do an act or take a step which, under these Rules, he is required to do or take; or
(ii) to comply with an order that he do such an act or take such a step,
the proceeding be dismissed or the defence struck out and that judgment be entered or there be judgment accordingly.