INTERPRETATION OF THE CHARTER Article XXVII Any question which may arise concerning the interpretation of this Charter shall be decided by a vote of two-thirds of the Assembly of Heads of State and Government of the Organization. ADHESION AND ACCESSION Article XXVIII 1. Any independent sovereign African State may at any time notify the Secretary-General of its intention to adhere or accede to this Charter. 2. The Secretary-General shall, on receipt of such notification, communicate a copy of it to all the Member States. Admission shall be decided by a simple majority of the Member States. The decision of each Member State shall be transmitted to the Secretary-General, who shall, upon receipt of the required number of votes, communicate the decision to the State concerned. MISCELLANEOUS Article XXIX The working languages of the Organization and all its institutions shall be, if possible African languages, English and French, Arabic and Portuguese. Article XXX The Secretary-General may accept, on behalf of the Organization, gifts, bequests and other donations made to the Organization, provided that this is approved by the Council of Ministers. Article XXXI 10