Commonwealth countries are concerned either as suppliers or recipients in many aid and technical assistance programmes, some purely intra-Commonwealth and some involving co-operation with non-Commonwealth countries or the United Nations and its agencies. The specifically intra - Commonwealth assistance programmes include the Special Commonwealth African Assistance Plan (SCAAP), the various schemes for Commonwealth Education Co-operation, the Commonwealth Caribbean Assistance Programme, the Overseas Service Aid and similar schemes, the Colonial Development and Welfare programmes and the Australian South Pacific Aid Programme. The Commonwealth is associated with non-Commonwealth countries in such programmes as the Colombo Plan, the Indus Basin Development Fund, the economic parts of the South East Asia Treaty Organisation and the Indian General Scholarship Scheme.