(a) By Notice of Dismissal. An appellant may dismiss an appeal without permission of the Court by filing a notice of dismissal at any time before the filing of the opinion of the Court. Dismissal of an appeal shall not affect a cross-appeal that is timely filed.

(b) Where Filed. The notice of dismissal shall be filed in the appellate court. If the record is in the lower court at the time the notice is filed, the appellant shall file a copy of the notice with the clerk of the lower court.

(c) Costs. Unless otherwise provided by stipulation of the parties or order of the Court, the dismissing party is responsible for all costs of the appeal or the part dismissed.

Source: This Rule is new.