Markup does the following things: 1) An HTML & plain text editor which helps tidy up your HTML source code and produce formatted text. 2) Generate XML sections or XHTML from HTML file with XML template and XSL stylesheet. NOTE: CHINESE VER. ONLY.
Markup is the textual description of data that provides information about the data type. It is the codes and characters that change a text document into an XHTML or other Markup Language document. Text is marked up with elements, delineated by tags that are keywords contained in pairs of angle brackets
Codes added to the stream of an encoded text to signal structure, formatting, or processing commands.