There were two classes of officials whose claims to the _fuero_ were different. Those known as _titulados y asalariados_ were directly employed in the tribunal, holding commissions from the inquisitor-general, enjoying salaries and understood to devote themselves exclusively to its service. For them and their families and dependants the fuero was complete, in both civil and criminal matters, and both active and passive--that is, whether as plaintiff or defendant. They were comparatively few in number, their position was unchallenged and, whatever may have been the injustice and oppression thence arising, there was little occasion for dispute. Beyond these were the unsalaried officials--commissioners and their notaries and alguazils, stationed at all important centres, consultors, _calificadores_ or censors and, above all, familiars numerously scattered throughout the land. All these pursued their regular avocations and only acted when called on for special service; they received no salary, but the positions were eagerly sought, chiefly on account of the privileges and immunities which they conferred. Of these the familiars were by far the most numerous and troublesome. In Spain the definition of their privileges had been the subject of numerous settlements known as Concordias and, when Philip II established the colonial tribunals, he endeavored to forestall trouble by extending to them the Castilian Concordia of 1553, which was much less favorable to the familiars than those of the kingdoms of Aragon and, at the same time, he sought to limit the number of appointees.