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Information that has become public
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A tournament in which both professionals and amateurs may play
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A clear or unobstructed space or expanse of land or water
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Where the air is unconfined
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Make available
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Become available
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Make the opening move
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Cause to open or to become open
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Become open
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Spread out or open from a closed or folded state
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Display the contents of a file or start an application as on a computer
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Afford access to
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Start to operate or function or cause to start operating or functioning
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Begin or set in action, of meetings, speeches, recitals, etc.
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Have an opening or passage or outlet
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Ready or willing to receive favorably
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Affording unobstructed entrance and exit; not shut or closed
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Affording free passage or access
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(set theory) of an interval that contains neither of its endpoints
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Open and observable; not secret or hidden
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Used of mouth or eyes
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Ready for business
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Not having been filled
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(of textures) full of small openings or gaps
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Openly straightforward and direct without reserve or secretiveness
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Not requiring union membership
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Open to or in view of all
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Possibly accepting or permitting
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Without undue constriction as from e.g. tenseness or inhibition
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Having no protecting cover or enclosure
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Affording free passage or view
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With no protection or shield
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Accessible to all
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Not sealed or having been unsealed
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Not brought to a conclusion; subject to further thought
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Not defended or capable of being defended