Annex D of the ECT contains a mechanism, following closely the WTO model, for settling trade disputes (related to obligations contained in Articles 5 and 29 of the ECT) between Contracting Parties, provided that at least one of them is not a GATT/WTO member. In 1999 the conference adopted the Rules of Procedure for Panel Proceedings (CCDEC1999 13), according to which the Secretariat shall have the responsibility of assisting panels, especially on the legal, historical and procedural aspects of the matters dealt with, and of providing secretarial and technical support.