I. Taxes and their scope In the first place, we will analyze the concepts that have been formulated, as well as by the doctrine and jurisprudence, in relation to the essential content that must be given to the term tribute.I. Los Tributos y su alcance En primer lugar, analizaremos los conceptos que se han formulado, tanto como por la doctrina y jurisprudencia, en relación al contenido esencial que debe otorgársele al término tributo.