The WTO agreements cover goods, services and intellectual property. They spell out the principles of liberalization, and the permitted exceptions. They include individual countries’ commitments to lower customs tariffs and other trade barriers, and to open and keep open services markets. They set procedures for settling disputes. These agreements are not static; they are renegotiated from time to time and new agreements can be added to the package. Many are now being negotiated under the Doha Development Agenda, launched by WTO trade ministers in Doha, Qatar, in November 2001.