A. The General Assembly may draw up internal regulations for the conduct of its business, the general duties to be assigned to the members of the Executive Committee and, in general, for all matters not provided for in the Statutes.

B. Similarly, each Commission may draw up regulations for the conduct of its own business. Such regulations shall be approved by the Executive Committee and no regulation shall be made which is contrary to the terms of the Statutes.

C. The working languages of the Union shall be English and French.

D. There shall be no discrimination as regards race, ethnic group, citizenship, religion, sex or political opinion within the Union or in the meetings organized by it or held on its behalf.

E. As a member of ICSU, the IGU follows ICSU guidelines on the free circulation of scientists.