The clerk of each family court of this State shall maintain a registry in which he shall enter the following:
- (1) certified copies of custody decrees of other states received for filing;
- (2) communications as to the pendency of custody proceedings in other states;
- (3) communications concerning a finding of inconvenient forum by a court of another state;
- (4) other communications or documents concerning custody proceedings in another state which may affect the jurisdiction of a court of this State or the disposition to be made by it in a custody proceeding.