(a) Where a further hearing of the case is to follow in the lower court, the clerk of the appellate court shall transmit a copy of the opinion to the clerk of the lower court, without charge, as soon as the opinion is written out. The copy shall remain on file for the information of the court and the parties.

(b) The appellate court, on rendering its decision in any case, shall instruct the clerk whether the case comes within the terms of this Code section; and a note of such instructions shall be entered on the minutes of the court.