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The hypertext Markup Language (HTML, English hypertext honor language), often also briefly as hypertext designation, is a text-based honor language for the representation of contents such as texts, pictures and hyper+on the left of in documents. HTML documents are the basis of the World Wide Web and by a Webbrowser are represented. Beside contents indicated by the Browser HTML contains also additional data of a web page in the form of Metainformationen, which give information e.g. over the language used in the text or the author or which summarize contents of the text. The honor language was developed further by the World Wide Web Consortium (W3C) to version 4.01 and is to be replaced now by XHTML.

Cascading Style Sheets (CSS) is a deklarative Stylesheet language for structured documents. It is used particularly together with HTML and XML (for example with SVG). CSS is to specify thereby how particularly distinguished contents are to be represented. It is important to arrange the HTML or XML in such a way that the sections, whose appearance should be alike can be recognized also as group. One distinguishes the meaning of individual sections in the document thus, while the appearance of these excellent sections in the CSS is specified. Accordingly CSS makes it possible to adapt the representation to the respective expenditure medium (for example paper, projection, language etc.). That is useful, in order to specify for example hyper+on the left of when printing specially, or in order for an indicator medium like a PDA or a mobile telephone with smaller dissolution the announcement to optimize (smaller side width and - height). Apart from various abilities in the color and writing range CSS offers the possibility of positioning elements freely or of specifying background pictures. CSS is considered nowadays as the standard Stylesheetsprache to the Web.

Javascript is a object-based script language with elements from the functional programming languages. As also Javascript is dynamically typed many script languages; Object orientation is supported by prototypes. From Brendan calibrate originally for the Netscape navigator are developed meanwhile in practically all graphic Browsern to a large extent compatible interpreters like e.g. Spidermonkey for Mozilla/Gecko or the JScript interpreter by Microsoft. Partial substantial differences during the support of dynamic contents such as ActiveX, were part of the causes for the so-called Browserkrieg. Meanwhile it is standardized under the name ECMAScript by the Ecma international. Originally it of calibrate "Movat" called. To however only correspond for marketing reasons it then in "LiveScript" and finally in "Javascript" renamed over the then current Java trend, although the language divides nearly only syntactic elements with Java. [1] Mainly for DHTML the language used itself to be able to open meanwhile new areas of application. Among other things can e.g. Pdf of documents thereby (similarly as HTML) to be changed and popular application programs such as Photoshop and Indesign of the CS-Suite of Adobe of system leave interactive thereby to automate itself. It also gladly as script language for plays the language core, similarly as with Lua, only few objects contains used there and thus the interpreter to be kept relatively small can. Despite the name similarity Javascript has only small thing in common with the programming language Java, whereby starting from version 6.0 according to standard the Javascript interpreter Rhino is provided. [2] Javascript is a mark of the company Sun Microsystems. The following explanations are limited to the use of Javascript DHTML (meanwhile better admits than Web 2.0/AJAX), although also standanlone applications with other interpreters are possible such as NJS.

The Extensible Markup Language, shortened XML, is an honor language for the representation of hierarchically structured data in the form of text files. XML is used preferentially for the exchange of data between different IT-systems, particularly over Internet. [1] The XML specification published from the World Wide Web Consortium (W3C) defines a meta language, on whose basis by structural and contentwise restrictions user-specific languages are defined. These restrictions are expressed by schema languages such as DTD or XML pattern. Examples of XML languages are: RSS, MathML, GraphML, XHTML, Scalable Vector Graphics, in addition, XML pattern. XML is a simplified subset of SGML.

Ajax a Apronym for the word sequence is Asynchronous Javascript and XML. It designates a concept of the asynchronous data communication between a server and the Browser, which make it possible to accomplish within a HTML side a HTTP inquiry without the side to load completely again to have. The actual new fact exists in the fact that only certain parts of a HTML side or also pure utilizable data are gradually if necessary reloaded.

XSL (Extensible Stylesheet Language) is a family from languages to the production of layouts for XML documents. The XSL dialect XSLT can serve also for the translation/transformation of a XML dialect into another format (mostly into other XML dialects). These layouts (also Stylesheets called) can be merged into the XML documents which can be formatted, whereby the layouts special media can be assigned. Like that it is possible to use a layout for printing and a layout for the representation at the computer.