sight rule

10 LETTERS · STARTS WITH S

sight rule is a valid 10-letter word worth 13 points in Scrabble and 15 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1I1G2H4T1R1U1L1E1

1 + 1 + 2 + 4 + 1 + 0 + 1 + 1 + 1 + 1 =13 PTS

DOUBLE WORD → 26TRIPLE WORD → 39

MEANING

What does sight rule mean?