reference mark

14 LETTERS · STARTS WITH R

reference mark is a valid 14-letter word worth 24 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1E1F4E1R1E1N1C3E1M3A1R1K5

1 + 1 + 4 + 1 + 1 + 1 + 1 + 3 + 1 + 0 + 3 + 1 + 1 + 5 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does reference mark mean?