Hence, that substance or being which is conscious of its own operations; the mind; the thinking agent or principal; the ego. Cf. Object, n., 2.
The incident, scene, figure, group, etc., which it is the aim of the artist to represent.
The subject of a certificate or of a request is the name of the certificate or request. The subject is a distinguished name and looks like " cn=Jon Doe, ou=Sales, o=startup, c=us".