Seat belts were an optional-use feature in cars starting in 1949, and were made compulsory in the US in 1984.
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Medicare's first prescription drug benefit, created late last year for 40 million people, will make it optional--but not mandatory--for seniors to order drugs through the mail.
The SIGMA DP3 Merrill is equipped with a hot shoe, allowing use of the dedicated external flashgun EF-140 DG (optional) as well as SIGMA electronic flashguns for SD series such as EF-610 DG Super (optional) and EF-610 DG ST (optional).
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Combined with its patent-pending optional pad-folio and integrated silicone keyboard cover that provides a traditional typing feel, nabi XD is your tweens' ultimate first tablet PC.
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Zone: Set a target for pace or heart-rate (with optional heart-rate monitor) and track progress in a simple full-screen graph throughout a workout.
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And we heard from one expert who sees Scotland lagging the rest of Britain and lacking the huge ambition in China, arguing too many Scottish companies are treating e-commerce as an optional add-on.
The car can be charged via a standard 120-volt outlet or an optional 240-volt quick-charging station.
For those cameras that feature a 10-pin terminal, the optional WR-A10 adapter can be fastened to allow use of the wireless remote controllers.
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Animation illustrates the workings of the car's various appointments, from the velvet-lined jewelry tray to the rear-console refrigerator or the optional sterling-silver champagne flutes.
There's also a handful of elements that we seldom see in these apps, such as a direction-relative wind indicator, optional motion-driven navigation and visual themes.
With an optional Blu-ray disc drive and optional internal TV tuner, as well as ample storage for music, movies and photos, the Inspiron One 23 is an attractive addition to the family living room.
The bottom line for now is that the remote is mostly just used during the optional TV-based setup (not optional if you choose to use WiFi), but there is a lot of potential here.
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Examples include the FSM-SENS-1, a 6-axis sensor-only module that integrates with an external Freespace MotionEngine, and the FSM-SI-2, which combines the Freespace MotionEngine on an embedded microprocessor along with a 3-axis digital gyroscope, 3-axis digital accelerometer and optional 3-axis magnetometer (compass) to provide high-performance, calibrated motion data for a variety of applications.
The SP-810UZ is also compatible with an optional Eye-Fi SD card, adding Wi-Fi capability so you can automatically upload images to your computer as you take them.
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On the plus side, battery life seems to be very good, clocking in at almost six hours with the standard six-cell battery and about nine with an optional nice-cell model.
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Both units feature motorized touchscreen LCDs (6.5-inch for the 4900, 7-inch for the 5900) and XM and Sirius connectivity, but the 5900 one-ups the 4900 with the inclusion of iPod compatibility and sync-support for Bluetooth phones thanks to an optional CD-BTB100 Bluetooth adapter.
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The YSP-3050 also offers iPod compatibility via the new optional YDS-11 dock (more information on the YDS-11 below).
The GL's 2013 updating brings along Mercedes's current spread-wing dash design, with standard Eucalyptus or optional burled-walnut wood veneer flowing into the doors' wainscoting.
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The XPS 15 gets a 15-inch screen, integrated Nvidia graphics, and an optional Blu-Ray disc drive.
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Other specs include a 17-inch WXGA panel, NVIDIA's Hybrid GeForce 9600GTS graphics, an optional Blu-ray drive, ExpressCard slot and a full accompaniment of connectors.
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Mr Foster said he was not calling for the re-introduction of "old-style" terraces but designated spaces for each fan with barriers between rows and optional flip-down seats.
Google jumped on board quickly, rolling out optional 2-step verification for its users.
There are optional co-op only missions, but beyond that your solo experience is truly solo.
Optional Blu-ray and TV Tuner make Pulse a phenomenal option for enjoyment in the living room.
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The company hopes one day to make money by offering users optional fee-based services from others.
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The IdeaCentre A730 features an optional high-resolution display (2, 560 x 1, 440) measuring 27 inches diagonal.
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The Z model has an optional Blu-ray Disc (BD) optical drive for enjoying, creating and storing high-definition content.
Yet there is also talk of introducing optional Kurdish-language classes in government schools.
It offers an extensive battery life of up to 7 hours as standard and with an optional long-life battery.
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There is room to comfortably seat as many as five adults, plus two small children in optional rear-facing jump seats.
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