Tagged Languages

1. HTML - HyperText Markup Language

   HTML is a tagged, structured language, designed to deliver text in reasonable formats without the author doing a lot of formatting.

   HTML tags are defined - any tags you enter that are not specified by the HTML DTD will not be rendered by the browser for client viewing.

2. DTD - Document Type Definition

   A tagged language used to define a set of HTML pages by defining a specific tag structure and values. A DTD is used to ensure that a specific page has the properties specified for the page set governed by the DTD.

3. CSS - Cascading Style Sheets

   Not a tagged language - a file with a set of rules for formatting HTML code.

4. XML - eXtensible Markup Language

   a tagged language with user defined tags, used to model data.

5. XSL - eXtensible Stylesheet Language
   
   
   • XSLT, XSLF, XPath
6. VML - Vector Markup Language
7. mathML - mathematics Markup Language