Rubric
RU'BRIC, noun [Latin rubrica; rubeo, to be red.]
1. In the canon law, a title or article in certain ancient law books; so called because written in red letters.
2. Directions printed in prayer books.
The rubric and the rules relating to the liturgy are established by royal authority, as well as the liturgy itself.
RU'BRIC, verb transitive To adorn with red.