Other remedies. The writ shall not be denied or annulled because plaintiff has another

plain, speedy or adequate remedy; but the relief by way of certiorari shall be strictly limited to questions of jurisdiction or the legality of the challenged acts, unless otherwise provided by statute. [Report 1943; November 9, 2001, effective February 15, 2002; October 31, 2008, effective January 1, 2009]