For the glass wall overlooking the street, Ms. Lutz insisted on installing window coverings, strung on simple hospital-track metal fixtures, for privacy.

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But on an auxiliary (and sometimes hidden) track employees can use a brokerage window to buy thousands of different mutual funds and usually exchange-traded funds and individual stocks, too.

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The earnings window for athletes in sports like gymnastics, track and field, wrestling, and figure skating is very small, both in terms of the number of athletes that will cash in as well as the length of time they have to cash in.

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To make a maintenance appointment, does a client need to wait at home for a 6-hour appointment window, have the technician show up late, and track mud through her freshly-cleaned carpet, no wonder she called to argue about the bill.

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First, it keeps track of the proportion of people who walk by the store window and can help retailers measure how changes in the window displays boost the number of people who walk in.

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From my window, I watch as a work-gang is summoned from houses along the track to place boulders under the carriage and lever the wheels.

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