Editing World Wide Web (section)

=== HTML ===
{{main|HTML}}
Hypertext Markup Language (HTML) is the standard [[markup language]] for creating [[web page]]s and [[web application]]s. With [[Cascading Style Sheets]] (CSS) and [[JavaScript]], it forms a triad of [[cornerstone]] technologies for the World Wide Web.<ref>{{cite book|last1=Flanagan|first1=David|title=JavaScript – The definitive guide|page=1|edition=6|quote=JavaScript is part of the triad of technologies that all Web developers must learn: HTML to specify the content of web pages, CSS to specify the presentation of web pages, and JavaScript to specify the behaviour of web pages.}}</ref>

[[Web browser]]s receive HTML documents from a [[web server]] or from local storage and [[browser engine|render]] the documents into multimedia web pages. HTML describes the structure of a web page [[Semantic Web|semantically]] and originally included cues for the appearance of the document.

[[HTML element]]s are the building blocks of HTML pages. With HTML constructs, [[HTML element#Images and objects|images]] and other objects such as [[Fieldset|interactive forms]] may be embedded into the rendered page. HTML provides a means to create [[structured document]]s by denoting structural [[semantics]] for text such as headings, paragraphs, lists, [[Hyperlink|links]], quotes and other items. HTML elements are delineated by ''tags'', written using [[Bracket#Angle brackets|angle brackets]]. Tags such as {{code|lang=html|code=<img />}} and {{code|lang=html|<input />}} directly introduce content into the page. Other tags such as {{code|lang=html|code=<p>}} surround and provide information about document text and may include other tags as sub-elements. Browsers do not display the HTML tags, but use them to interpret the content of the page.

HTML can embed programs written in a [[scripting language]] such as [[JavaScript]], which affects the behaviour and content of web pages. Inclusion of CSS defines the look and layout of content. The [[World Wide Web Consortium]] (W3C), maintainer of both the HTML and the CSS standards, has encouraged the use of CSS over explicit presentational HTML {{as of|1997|lc=y|since=y|post=.}}<ref name="deprecated">{{cite web|url=https://www.w3.org/TR/REC-html40-971218/conform.html#deprecated|title=HTML 4.0 Specification – W3C Recommendation – Conformance: requirements and recommendations|publisher=World Wide Web Consortium|date=18 December 1997|access-date=6 July 2015|archive-date=5 July 2015|archive-url=https://web.archive.org/web/20150705040855/http://www.w3.org/TR/REC-html40-971218/conform.html#deprecated|url-status=live}}</ref>