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List of file signatures. This is a list of file signatures, data used to identify or verify the content of a file. Such signatures are also known as magic numbers or Magic Bytes. Many file formats are not intended to be read as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible.
This is a list of all airline codes. The table lists the IATA airline designators , the ICAO airline designators and the airline call signs (telephony designator). Historical assignments are also included for completeness.
Visa Inc. ( / ˈviːzə, ˈviːsə /) is an American multinational payment card services corporation headquartered in San Francisco, California. [1] [4] It facilitates electronic funds transfers throughout the world, most commonly through Visa-branded credit cards, debit cards and prepaid cards. [5] Visa is one of the world's most valuable ...
The card security code is located on the back of Mastercard, Visa, Discover, Diners Club, and JCB credit or debit cards and is typically a separate group of three digits to the right of the signature strip On American Express cards, the card security code is a printed, not embossed, group of four digits on the front towards the right
A gift card, also known as a gift certificate in North America, or gift voucher or gift token in the UK, [1] is a prepaid stored-value money card, usually issued by a retailer or bank, to be used as an alternative to cash for purchases within a particular store or related businesses. Gift cards are also given out by employers or organizations ...
The United States passport card is an optional national identity card and a travel document issued by the U.S. federal government in the size of a credit card. [2] Like a U.S. passport book, the passport card is only issued to U.S. citizens and U.S. nationals exclusively by the U.S. Department of State. The passport card allows its holders to ...
Portal. v. t. e. A credit card is a payment card, usually issued by a bank, allowing its users to purchase goods or services or withdraw cash on credit. Using the card thus accrues debt that has to be repaid later. [1] Credit cards are one of the most widely used forms of payment across the world.
1 Control-C has typically been used as a "break" or "interrupt" key. 2 Control-D has been used to signal "end of file" for text typed in at the terminal on Unix / Linux systems. Windows, DOS, and older minicomputers used Control-Z for this purpose. 3 Control-G is an artifact of the days when teletypes were in use.