rubric

an authoritative rule of conduct or procedure

an explanation or definition of an obscure word in a text

directions for the conduct of Christian church services (often printed in red in a prayer book)

a heading that names a statute or legislative bill; may give a brief summary of the matters it deals with; "Title 8 provided federal help for schools"

a title or heading that is printed in red or in a special type

category name; "it is usually discussed under the rubric of `functional obesity'"

adorn with ruby red color