leading mark

12 LETTERS · STARTS WITH L

leading mark is a valid 12-letter word worth 19 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

L1E1A1D2I1N1G2M3A1R1K5

1 + 1 + 1 + 2 + 1 + 1 + 2 + 0 + 3 + 1 + 1 + 5 =19 PTS

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does leading mark mean?