The Court of Appeal has announced (PDF) a new set of Practice Directives and Practice Notices which will come into effect and replace the old set on 19 September 2011. Practice Directives and Practice Notes are special rules issued by the Chief Justice to govern aspects of court procedure not covered by the formal Rules of Court.
Each level of court has it's own set of special rules like these. In the Supreme Court, "Practice Directions" are issued by that court's Chief Justice. The Practice Directions of the Provincial Court are issued by the Chief Judge.