They tell the few drivers winding their way through shut-down streets which roads are open.

ECONOMIST: Upheaval in Syria

This is a lot like the software business before open source became a force: everything is locked down and shut tight.

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Once you open up the process, it's not easy to shut it down.

CNN: What if you could make anything you wanted?

Those that are open are watching as their more aggressive brothers and sisters are getting shut-down left and right.

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He slammed the book shut, holding the cover down as though it might spring back open accusingly.

NEWYORKER: Idols

And with a cold April, ski mountains in northern New England stayed open longer than last year, when record-high temperatures in March forced many to shut down.

WSJ: Skier visits up 20 percent at Northeast ski areas

SWIFT, the international financial messaging firm, should push its new standard for corporate actions more aggressively and move to shut down the older message standard, several market participants have said in an open letter.

FORBES: Connect

One impact of the ruling is that Mexican airlines cannot open new services to the United States, meaning that rivals cannot take over routes that Mexicana has been forced to shut down.

ECONOMIST: Mexican airlines