Taws?
Because of my job, I'm aware of TAWS (and subsequently EGPWS), but I dunno what it means in the context of your post.

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Perhaps you've never played marbles. Before the game begins, 'taws', the 'firing' marbles, are declared (revealed) so that no-one can use an undeclared ball-bearing instead of a clay or glass marble. Figuratively, then, it has long meant back to first principles or to the starting point. Even Wiki probably has something about it.

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