Amendments to this Charter shall be adopted by an affirmative vote of the Council of Presidents

Article 18: OFFICIAL TEXT
English shall be the official language of this Charter.

Article 19: RATIFICATION AND SIGNATURE
19.1 This Charter shall ratified by the signatories of the Alumni Associations in accordance with the respective rules of each Alumni Association.
19.2 Ratification by each Alumni Association shall be deposited with the Secretary General.
19.3 This Charter shall come into force among the Alumni Associations upon ratification by all Alumni Associations.
19.4 The ratification will be done in the last week of March 1997..