These give the owner of the option the right to buy the futures contract within a certain time frame at a preset price.

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As Google co-founder Sergey Brin himself revealed previously, Glass will also have an automatic picture-taking mode, snapping pics at a preset intervals (such as every 5 seconds).

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Mercedes-Benz's Distronic Plus system, for instance, contains radar-based sensors as part of its cruise-control system, to keep the car at a preset distance from the vehicle in front, braking automatically if the gap narrows quickly.

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Traditional security does this with a separate device, usually a card or a dongle, that is preset at the home office.

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Not only can it display your PS4 games in the Vita's native resolution (960x544), but it can be activated at any given time rather than having to be preset.

ENGADGET

If someone described to you an ancient civilization in which, every four years, at great expense, citizens convened to watch a carefully selected group perform a series of meticulously preset routines, and in which the watching was thought of not as a duty but as a hugely anticipated and unambiguously pleasurable experience, you would guess that, socially, this ritual was doing a lot of work.

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