A markup language is a system for annotating a document in a way that is syntactically distinguishable from the text. Markup instructs the software displaying the text to carry out appropriate actions, but is omitted from the displayed final output.
A brief explanation of what markup languages are and where they come from.
SGML and XML resource site with overviews of other related standards.
The original hypertext project. Includes a history of the project.
The Textile Markup (2.4) Reference for the Textpattern content management system.
A straightforward machine parsable data serialization format designed for human readability and interaction with scripting languages such as Perl and Python.
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