When you create a group, you can choose 3 privacy settings: Public, Closed and Secret. The table below shows who can join these groups and what people can see about them. If you're an admin of a group, learn how to change the privacy settings of your group.
For the album by Pestilence, see Doctrine (album). Doctrine (from Latin: doctrina) is a codification of beliefs or a body of teachings or instructions, taught principles or positions, as the essence of teachings in a given branch of knowledge or belief system. The Greek analogue is the etymology of catechism.
Word Origin & History. principle c.1380, fundamental truth or proposition, from Anglo-Norm. principle, from O.Fr. principe, from L. principium (pl. principia) a beginning, first part, from princeps (see prince). Meaning origin, source is attested from 1413. Sense of general rule of conduct is from c.1532.