The Apple I went on sale in July 1976 at a price of, because Wozniak " liked repeating digits " and because they originally sold it to a local shop for $ 500 plus a one-third markup.

If the character encoding for a web page is chosen appropriately then HTML character references are usually only required for a markup delimiting characters mentioned above, and for a few special characters ( or not at all if a native Unicode encoding like UTF-8 is used ).

* Continuity of Care Document, an XML-based markup standard for patient medical document exchange

A Document Type Definition ( DTD ) is a set of markup declarations that define a document type for an SGML-family markup language ( SGML, XML, HTML ).

Dynamic HTML, or DHTML, is an umbrella term for a collection of technologies used together to create interactive and animated web sites by using a combination of a static markup language ( such as HTML ), a client-side scripting language ( such as JavaScript ), a presentation definition language ( such as CSS ), and the Document Object Model.

HyperText Markup Language ( HTML ) is the main markup language for displaying web pages and other information that can be displayed in a web browser.

Default characteristics for every item of HTML markup are defined in the browser, and these characteristics can be altered or enhanced by the web page designer's additional use of CSS.

The following is an example of the classic Hello world program, a common test employed for comparing programming languages, scripting languages and markup languages.

Interwiki link notation varies, depending largely on the syntax a wiki uses for markup.

Example of RecipeBook, a simple markup language based on XML for creating recipes.

A markup language is a modern system for annotating a document in a way that is syntactically distinguishable from the text.

In recent years, a number of small and largely unstandardized markup languages have been developed to allow authors to create formatted text via web browsers, for use in wikis and web forums.

For centuries, this task was done primarily by skilled typographers known as " markup men " or " copy markers " who marked up text to indicate what typeface, style, and size should be applied to each part, and then passed the manuscript to others for typesetting by hand.

In the 1970s, Tunnicliffe led the development of a standard called GenCode for the publishing industry and later was the first chair of the International Organization for Standardization committee that created SGML, the first standard descriptive markup language.

SGML specified a syntax for including the markup in documents, as well as one for separately describing what tags were allowed, and where ( the Document Type Definition ( DTD ) or schema ).

From the late ' 80s on, most substantial new markup languages have been based on SGML system, including for example TEI and DocBook.

There is active research on non-hierarchical markup models, some expressed within XML and related languages ( for example, using the Text Encoding Initiative Guidelines and derivatives such as the Open Scripture Information Standard and CLIX ), and some not ( for example, MECS and the Layed Markup and Annotation Language or LMNL ).

Such " standoff markup " is typical for the internal representations that programs use to work with marked-up documents.

* Mathematical markup languages are computer notations for representing mathematical formulae.

OpenMath is the name of a markup language for specifying the meaning of mathematical formulae.

Normally non-ASCII typesetting is used for the mathematical equations, for example by means of TeX or MathML markup, or proprietary Formula editor formats.

CellML is an XML based markup language for describing mathematical models.

The World Wide Web Consortium and the Unicode Consortium have made recommendations on the choice between using markup and using superscript and subscript characters: " When used in mathematical context ( MathML ) it is recommended to consistently use style markup for superscripts and subscripts ... However, when super and sub-scripts are to reflect semantic distinctions, it is easier to work with these meanings encoded in text rather than markup, for example, in phonetic or phonemic transcription.

: HTML 3. 2 dropped math formulas entirely, reconciled overlap among various proprietary extensions and adopted most of Netscape's visual markup tags.

The intended use was to allow chemical and algebra formulas to be written without markup.

XUL is a user interface markup language implemented as an XML dialect ; it allows for graphical user interfaces to be written in a similar manner to Web pages.

Prettyprint ( or pretty-print ) is the application of any of various stylistic formatting conventions to text, source code, markup, and other similar kinds of content.

The mechanism is similar to HTML's tag ( which is specific to the HTML markup language ), but the XInclude mechanism works with any XML format, such as SVG and XHTML.

GRML – an acronym for General Reuse Markup Language – is a markup language similar to HTML and XML, using tags to organize data in files and web pages.

The concepts used by ARINC 661 are similar to those used in user interface markup languages.

* Attribute Grammars in XML ( AG-markup ): For AG's semantic rules, there are various possible XML markups that are similar to Horn-rule markup

The character entity references,, and are predefined in HTML and SGML, because,, and are already used to delimit markup.

The W3C, maintainer of both the HTML and the CSS standards, encourages the use of CSS over explicit presentational HTML markup.

However, the SGML concept of generalized markup is based on elements ( nested annotated ranges with attributes ) rather than merely print effects, with also the separation of structure and processing ; HTML has been progressively moved in this direction with CSS.

: Initially code-named " Cougar ", HTML 4. 0 adopted many browser-specific element types and attributes, but at the same time sought to phase out Netscape's visual markup features by marking them as deprecated in favor of style sheets.

HTML markup consists of several key components, including elements ( and their attributes ), character-based data types, character references and entity references.

The markup text < nowiki >'< title > Hello HTML </ title >'</ nowiki > defines the browser page title.

* XML with the XLink extension – A newer hypertext markup language that extends and expands capabilities introduced by HTML.

The markup can be converted to HTML, Portable Document Format | PDF and Rich Text Format using a programming language or Extensible Stylesheet Language | XSL.

Some markup languages, such as HTML, have presentation semantics, meaning that their specification prescribes how the structured data are to be presented, but other markup languages, like XML, have no predefined semantics.

A well-known example of a markup language in widespread use today is HyperText Markup Language ( HTML ), one of the document formats of the World Wide Web.

HTML, which is an instance of SGML ( though, strictly, it does not comply with all the rules of SGML ), follows many of the markup conventions used in the publishing industry in the communication of printed work between authors, editors, and printers.

HTML is quite likely the most used markup language in the world today.

In contrast, the tag in HTML is an example of presentational markup ; it is generally used to specify a particular characteristic of the text ( in this case, the use of an italic typeface ) without specifying the reason for that appearance.

Because markup languages, and more generally data description languages ( not necessarily textual markup ), are not programming languages ( they are data without instructions ), they are more easily manipulated than programming languages – for example, web pages are presented as HTML documents, not C code, and thus can be embedded within other web pages, displayed when only partially received, and so forth.