rubric

rubric is a   Noun

Definition:

[1] That part of any work in the early manuscripts and typography which was colored red, to distinguish it from other portions. Hence, specifically:

[2] A titlepage, or part of it, especially that giving the date and place of printing; also, the initial letters, etc., when printed in red.

[3] Hence, that which is established or settled, as by authority; a thing definitely settled or fixed. Cowper. Nay, as a duty, it had no place or rubric in human conceptions before Christianity. De Quincey.

Synonyms: