Crossword Genius

PC key (3)

Ross

There are a few possibilities for this:

'pc key' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for tab that I've seen before include "Marker" , "Check" , "Text indent key" , "Bar tally; small flap" , "Ring pull" .)

I've seen this clue in the Newsday, The New York Times, the King Feature Syndicate and The Wall Street Journal.
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