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Product activation is a license validation procedure required by some proprietary software programs. Product activation prevents unlimited free use of copied or replicated software. Unactivated software refuses to fully function until it determines whether it is authorized to fully function. Activation allows the software to stop blocking its use.
Product key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters.
In the mid-1980s, the GNU project produced copyleft free-software licenses for each of its software packages. An early such license (the "GNU Emacs Copying Permission Notice") was used for GNU Emacs in 1985, [5] which was revised into the "GNU Emacs General Public License" in late 1985, and clarified in March 1987 and February 1988.
In 1956, the United States, Canada, and Mexico came to an agreement with the American Association of Motor Vehicle Administrators, the Automobile Manufacturers Association and the National Safety Council that standardized the size for license plates for vehicles (except those for motorcycles) at 6 inches (15 cm) in height by 12 inches (30 cm) in width, with standardized mounting holes. [3]
The license was approved on October 12, 2007, along with the Ms-RL. [11] According to the Free Software Foundation, it is a free software license but not compatible with the GNU GPL. [5] Ms-PL provides a free and flexible licensing for developers using source codes under this license.
In contrast to most HUDs found in aircraft, automotive head-up displays are not parallax-free. The display may not be visible to a driver wearing sunglasses with polarised lenses. Add-on HUD systems also exist, projecting the display onto a glass combiner mounted above or below the windshield, or using the windshield itself as the combiner.
A license plate that read 5-4187, for example, was a US Army car registered in Taegu. Vehicles to be used on a US military base had a white license plate with "US Army" written in English on the top with a six-digit number below. The serial number is always four digits, 0-9. Leading zeros are included in the serial number.
At the end of 2008 the US Forces started to introduce a new plate for temporary registration of vehicles (transfer plates). The small-size version with the blue strip "USA" and NATO insignia is in use. The red letters are in FE-style and the code follows the format "T xx yyyyy". The "T" happens to be short for either "temporary" or "transfer ...