Translate the following English sentence to French:
"According to these conclusions, the Charter must contain three categories of rights. The first category is rights of freedom and equality and procedural rights, as guaranteed by the European Convention for the Protection of Human Rights and Fundamental Freedoms."
Les chefs d' État et de gouvernement ont fixé eux-mêmes, dans les conclusions du Conseil européen de Cologne, les grandes lignes du contenu de la Charte.