187. The Court, under special circumstances and for good cause shown, may extend or abridge the time appointed by these rules or fixed by any order of the Court for doing any act or taking any proceeding. Where any direction is made under this rule, it shall not be necessary, unless the Court directs the contrary, that such direction should be drawn up in the form of an order, but it shall be sufficient if the Registrar marks any document or process affected thereby in red ink accordingly.