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・ "O" Is for Outlaw
・ "O"-Jung.Ban.Hap.
・ "Ode-to-Napoleon" hexachord
・ "Oh Yeah!" Live
・ "Our Contemporary" regional art exhibition (Leningrad, 1975)
・ "P" Is for Peril
・ "Pimpernel" Smith
・ "Polish death camp" controversy
・ "Pro knigi" ("About books")
・ "Prosopa" Greek Television Awards
・ "Pussy Cats" Starring the Walkmen
・ "Q" Is for Quarry
・ "R" Is for Ricochet
・ "R" The King (2016 film)
・ "Rags" Ragland
・ ! (album)
・ ! (disambiguation)
・ !!
・ !!!
・ !!! (album)
・ !!Destroy-Oh-Boy!!
・ !Action Pact!
・ !Arriba! La Pachanga
・ !Hero
・ !Hero (album)
・ !Kung language
・ !Oka Tokat
・ !PAUS3
・ !T.O.O.H.!
・ !Women Art Revolution


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Opera browser : ウィキペディア英語版
Opera (web browser)

Opera is a web browser developed by Opera Software. The latest version is available for Microsoft Windows, , and Linux operating systems, and uses the Blink layout engine. An earlier version using the Presto layout engine is still available, and additionally runs on FreeBSD systems.
Opera siblings – Opera Mobile, Opera Mini and Opera Coast – work on devices running Android, iOS, Windows Phone, Symbian, Maemo, Bada, BlackBerry and Windows Mobile operating systems, while Opera Mini runs on Java ME-capable devices.〔(【引用サイトリンク】title=Mobile )
According to Opera Software, the browser had more than 350 million users worldwide in the 4th quarter 2014. Total Opera mobile users reached 291 million in June 2015. Opera has been noted for originating many features later adopted by other web browsers. A prominent example is Speed Dial.
==History==

(詳細はTelenor, the largest Norwegian telecommunications company. In 1995, it branched out into a separate company named Opera Software ASA. Opera was first released publicly with version 2.0 in 1996, which only ran on Microsoft Windows. In an attempt to capitalize on the emerging market for Internet-connected handheld devices, a project to port Opera to mobile device platforms was started in 1998.〔 Opera 4.0, released in 2000,〔 included a new cross-platform core that facilitated creation of editions of Opera for multiple operating systems and platforms.
Up to this point, Opera was trialware and had to be purchased after the trial period ended. Version 5.0 (released in 2000) saw the end of this requirement. Instead, Opera became ad-sponsored, displaying advertisements to users who had not paid for it. Later versions of Opera gave the user the choice of seeing banner ads or targeted text advertisements from Google. With version 8.5 (released in 2005) the advertisements were removed entirely and primary financial support for the browser came through revenue from Google (which is by contract Opera's default search engine).
Among the new features introduced in version 9.1 (released in 2006) was fraud protection using technology from GeoTrust, a digital certificate provider, and PhishTank, an organization that tracks known phishing web sites. This feature was further improved and expanded in version 9.5, when GeoTrust was replaced with Netcraft, and malware protection from Haute Secure was added.
Also in 2006, Opera Software ASA released Internet Channel and Nintendo DS Browser for Nintendo's DS and Wii gaming systems.
A new JavaScript engine called Carakan, after the Javanese alphabet, was introduced with version 10.50. According to Opera Software, Carakan makes Opera 10.50 more than seven times faster in SunSpider than Opera 10.10. On 16 December 2010, Opera 11 was released, featuring extensions, tab stacking, visual mouse gestures, and changes to the address bar.〔(【引用サイトリンク】title=Opera 11.00 for Windows changelog )〕 Opera 12 was released on 14 June 2012.
On 12 February 2013, Opera announced it would drop its own Presto engine in favour of WebKit as implemented by Google's Chrome browser, using code from the Chromium project. Opera Software also planned to contribute code to WebKit. On 3 April 2013, Google announced that it would fork components from WebKit to form a new rendering engine known as Blink; the same day, Opera confirmed that it would follow Google in implementing Blink.
On 28 May 2013, a beta release of Opera 15 was made available,〔(Opera Desktop Team - Opera Next 15 Released! ). My.opera.com (2013-05-28). Retrieved on 2013-07-21.〕 the first version based on the Chromium project.〔(Opera Developer News - A first peek at Opera 15 for Computers ). My.opera.com (2013-05-28). Retrieved on 2013-07-21.〕〔(The Chromium-Powered Opera Is Finally Here ). WebProNews (2013-05-28). Retrieved on 2013-07-21.〕 Many distinctive features of the previous versions were dropped, and Opera Mail was separated into a standalone application derived from Opera 12.〔(Standalone Opera Mail Client Coming to Linux ). Omgubuntu.co.uk (2013-05-28). Retrieved on 2013-07-21.〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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