Other examples of the adoption of the textual meaning are the interpretation of GA Rs. 1798 (XVII) of 1962 regarding the travel expenses of members of Bureaux in UNDP (1978 UNJY p. 176); and the interpretation of Rules 75 and 88 of the Rules of Proce

in the GA (1983 UNJY p. 174). 88 1964 UNJY p. 225, opinion of the Legal Counsel of the UN. 89 1982 UNJY p. 182, opinion of the Legal Counsel of the UN. Other examples of the same procedure are to be found in the opinions of the Legal Counsel of the UN given in connection with the interpretation of paragraph 7 of GA Rs. 2063(XX) of 1965 (1966 UNJY p. 238); of the Statute of the International Institute for Education and Planning which was a resolution of the General Conference of the UNESCO (ibid. p. 266); and in the interpretation by the Legal Counsel of the UN for the GA of GA Rs. 2816 (XXVI) of 1971 relating to the collection of funds from private sources for disaster relief (1974 UNJY p. 162). 90 1983 UNJY p. 179. d e c i s i o n s o f no n - j u d i c i a l o rg a n s 63 of 1963 of the UN Economic Commission for Latin America the question of participation in seminars on foreign dispute resolution trade was resolved by reference to UN principles and practice.91 There is, however, another principle which also operates which is in keeping with the position that practice cannot ‘amend’ the text of a resolution made under the constituent instrument. This is that a practice which is clearly contrary to a text cannot negate a text. This principle was applied to reject a practice in connection with the interpretation of Rule 90 of the Rules of Procedure of the GA concerning the explanation of his vote by a proposer of a motion.92 So much for practice by itself as a tool of interpretation. It has also been used, as has been seen, to support a textual meaning, to support a meaning based on the principle of effectiveness, and to derive a meaning in conjunction with the preparatory work. While practice is an integral tool in the interpretation of decisions of organs, it is used with caution, since such decisions are of a delegated nature. It can certainly be used to fill in gaps and resolve ambiguities but its use could not be extended beyond this. The principle of effectiveness (taking into account the context) has also been used to interpret decisions of organs in the absence of con- trary indication. As has already been seen, it was applied in interpreting the GA resolution setting up the UN Council for Namibia to imply a power. It was applied also in interpreting paragraph 6 of the SC Resolu- tion 1474 (ESIV) of 1961 both of which related to the import of arms and war materials into the Congo.93 The principle was successfully applied in interpreting GA Resolution 2248 (S-V) of 1967 which concerned the powers of the UN Council for South West Africa, in order to give the Council power to issue travel documents to the inhabitants and citi- zens of South West Africa. There it was applied in conjunction with the practice of the Council.