output indicator

16 LETTERS · STARTS WITH O

output indicator is a valid 16-letter word worth 20 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

O1U1T1P3U1T1I1N1D2I1C3A1T1O1R1

1 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 2 + 1 + 3 + 1 + 1 + 1 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does output indicator mean?