Under the first heading there are eight points of inquiry:
(1) Whether a sacrament is a kind of sign?
(2) Whether every sign of a sacred thing is a sacrament?
(3) Whether a sacrament is a sign of one thing only, or of several?
(4) Whether a sacrament is a sign that is something sensible?
(5) Whether some determinate sensible thing is required for a sacrament?
(6) Whether signification expressed by words is necessary for a sacrament?
(7) Whether determinate words are required?
(8) Whether anything may be added to or subtracted from these words? _______________________
FIRST ARTICLE [III, Q. 60, Art. 1]