42.14.1 An appellant may discontinue an appeal by filing a notice of discontinuance in Form 25 and by serving the notice on the respondent.
42.14.2 Unless the Court or a Justice, or the Registrar, otherwise orders or directs, an appellant who discontinues an appeal shall pay the respondent's costs in respect of the appeal, and such costs shall be taxed, unless agreed.
42.14.3 Filing the notice of discontinuance shall be sufficient authority for the taxation of costs.