A document type declaration, or DOCTYPE, is an instruction that associates a particular XML or SGML document (for example, a web page) with a document type definition (DTD) (for example, the formal …

A document type definition (DTD) is a specification file that contains a set of markup declarations that define a document type for an SGML -family markup language (GML, SGML, XML, HTML).

An SGML document may have three parts: the SGML Declaration, the Prologue, containing a DOCTYPE declaration with the various markup declarations that together make a Document Type Definition …

The original purpose of the doctype was to enable the parsing and validation of HTML documents by SGML tools based on the document type definition (DTD). The DTD to which the DOCTYPE refers …

HTML5 (Hypertext Markup Language 5) is a markup language used for structuring and presenting hypertext documents on the World Wide Web. It was the fifth and final [4] major HTML version that is …

Example of RecipeML, a simple markup language based on XML for creating recipes. The markup can be converted programmatically for display into, for example, HTML, PDF or Rich Text Format. A …

Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of …

The Document Object Model (DOM) is a cross-platform [2] and language-independent API that treats an HTML or XML document as a tree structure wherein each node is an object representing a part of the …

PDF was one of a number of competing electronic document formats in that era such as DjVu, Envoy, Common Ground Digital Paper, Farallon Replica and traditional PostScript itself. In those early years …

A document file format is a text or binary file format for storing documents on a storage media, especially for use by computers. There currently exists a multitude of incompatible document file …