Faculty. In the language of the law, a faculty means a power which a person is at liberty to exercise; hence it follows that a faculty does not fall under the negative prescription, since it is of the very essence of the right that it may be exercised at any time. Faculties may be adjudged: thus, an heir's right to reduce his ancestor's deed on the head of deathbed,—a minor's right to reduce a deed on the head of minority and lesion,—a faculty to burden lands,—a power to recall an annuity,—may all be adjudged. But it has been held that the right to pursue a declarator of irritancy against the heir of entail in possession cannot.