(a. shall mean all courts in the Commonwealth below the jurisdictional level of the circuit courts including general district courts and juvenile and domestic relations district courts;

(b. shall mean all courts not of record, except juvenile and domestic relations district courts in counties and cities heretofore designated as county and municipal courts;

(c. shall mean all courts in counties and cities heretofore designated as juvenile and domestic relations courts or regional juvenile and domestic relations courts;

(d. shall mean general district courts and juvenile and domestic relations district courts;

(e. and “municipal courts” shall be deemed to refer to general district courts;

(f. and “regional juvenile and domestic relations courts” shall be deemed to refer to juvenile and domestic relations district courts; and

(g. shall mean that judge so designated for a term to assume primary administrative responsibility for the general district courts or the juvenile and domestic relations district courts in the district served by such judge.