Web Design Term – Markup
A Markup or Markup language is the language like HTML or XHTML that websites are built with. It’s the coding that separates a plain text document, that a computer would generally just read and display as text, into a Markup document. This indicates that what the computer is reading isn’t just normal text to be displayed, but special code that has to be displayed in a different, specific way that the Markup language specifies. For example “This is text” is plain text, “<p> This is Markup’d text </p>” is also text, but the code indicates that it is to be read by the computer as code that changes the way it is displayed.