Negotiating Groups have been constituted in the WTO on each aspect of the negotiations. From time to time, based on the views expressed by the WTO Members, the Chairs of these Groups bring out draft modalities containing proposals that would help realize the objectives of the negotiations. In the agriculture negotiations, the draft modalities include formulas and other methods to be used to reduce tariffs and agricultural subsidies. The Chair of the Negotiating Group on Agriculture brought out Draft Modalities on Agriculture on 17 July 2007 ; 1 and based on the multilateral discussions, brought out further revised draft versions on 8 February , 19 May and 10 July 2008 . The revised draft text of 10 July 2008 formed the basis of discussion during the Mini-Ministerial meeting of the WTO in Geneva in July 2008. A fourth revised draft version was issued on 6 December 2008.