Requests the Secretary-General to submit to the General Assembly at its thirty-first session, through the Advisory Committee on Administrative and Budgetary Questions, information-including the relevant authorization and budgetary appropriations-on programmes, projects or activities within the United Nations which have already been completed or are nearly completed, or which were considered by the appropriate intergovernmental bodies, in particular when they werc examining the medium-term plan, as obsolete, of marginal usefulness or ineffective;