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nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

Moodle is a Course Management System (CMS).

PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.

The Yahoo! User Interface (YUI) Library is a set of utilities and controls, written in JavaScript, for building richly interactive web applications using techniques such as DOM scripting, DHTML and AJAX.

YUI3 is Yahoo! latest JavaScript and CSS library.

The DOCTYPE is a required preamble for HTML5 websites.

The description attribute provides a concise explanation of the page content.

Meta tag containing keywords related to the page.

Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML

JavaScript is a scripting language most often used for client-side web development. Its proper name is ECMAScript, though "JavaScript" is much more commonly used. The website uses JavaScript.

A way to make Web content and Web applications more accessible to people with disabilities. It especially helps with dynamic content and advanced user interface controls developed with Ajax, HTML, JavaScript, and related technologies.

The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a frame or iframe. Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

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