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  2. Wikipedia:Sandbox - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Sandbox

    Do NOT, under any circumstances, place promotional, copyrighted, offensive, or libelous content in sandbox pages. Doing so WILL get you blocked from editing. For more info about sandboxes, see Wikipedia:About the sandbox and Help:My sandbox. New to Wikipedia? See the contributing to Wikipedia page or our tutorial. Questions? Try the Teahouse

  3. Help:Searching - Wikipedia

    en.wikipedia.org/wiki/Help:Searching

    Wikipedia uses a powerful search engine, with a search box on every page. The search box will navigate directly to a given page name upon an exact match. But, you can force it to show you other pages that include your search string by including a tilde character ~ anywhere in the query.

  4. Universal Product Code - Wikipedia

    en.wikipedia.org/wiki/Universal_Product_Code

    A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

  5. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  6. Code of Hammurabi - Wikipedia

    en.wikipedia.org/wiki/Code_of_Hammurabi

    The term "code" presupposes that the document was intended to be enforced as legislation. It was used by Scheil in his editio princeps, [90] and widely adopted afterwards. C. H. W. Johns, one of the most prolific early commentators on the document, proclaimed that "the Code well deserves its name". [41]

  7. History of Gmail - Wikipedia

    en.wikipedia.org/wiki/History_of_Gmail

    The current Gmail logo. The public history of Gmail dates back to 2004.Gmail, a free, advertising-supported webmail service with support for Email clients, is a product from Google.

  8. Lottery scam - Wikipedia

    en.wikipedia.org/wiki/Lottery_scam

    Another type of lottery scam is a scam email or web page where the recipient had won a sum of money in the lottery. The recipient is instructed to contact an agent very quickly but the scammers are just using a third party company, person, email or names to hide their true identity, in some cases offering extra prizes (such as a 7 Day/6 Night Bahamas Cruise Vacation, if the user rings within 4 ...

  9. Reverse DNS lookup - Wikipedia

    en.wikipedia.org/wiki/Reverse_DNS_lookup

    For example, to do a reverse lookup of the IP address 8.8.4.4 the PTR record for the domain name 4.4.8.8.in-addr.arpa would be looked up, and found to point to dns.google. If the A record for dns.google in turn pointed back to 8.8.4.4 then it would be said to be forward-confirmed .