Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML.
www.w3schools.comThe Loening SL was an American submarine-based reconnaissance flying boat designed and built by Loening Aeronautical Engineering for the United States Navy. First flown in 1931 the Loening SL was lightweight flying-boat designed to be folded up and stored on a submarine within an 8-foot space.
en.wikipedia.orgcodebeautify.org
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XSL (eXtensible Stylesheet Language) — семейство рекомендаций консорциума W3C, описывающее языки преобразования и визуализации XML-документов. Состоит из трех частей: XSL Transformations (XSLT) — язык преобразований XML-документов.
ru.wikipedia.orgwww.freeformatter.com
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