XML to be, VRML to see

Introduction XML is a strict subset of Standard Generalized Markup Language (SGML) which can be described as mother of the markup languages. The XML Specification [1] describes rules which enable user communities to define the tags they require. Since the XML specification's release in February 1998, there has been active development of numerous XML applications and tools. Mathematical Markup Language (MathML), Synchronized Multimedia Markup Language (SMIL), Web Interface Description Language (WIDL), to name just a few, are some of the XML applications that are most popular. XML is currently not as prevalent as HTML due to lack of adequate development in related technologies like Extensible Style Language (XSL) and Document Object Model (DOM). Once these technologies are ready for use, XML will become more common on the world wide web. Virtual Reality Modelling Language (VRML) [3] is the ISO standard for representing 3D content on the Web. It is a text based file format for describing 3D objects and worlds. Along with 3D graphics, it also combines multimedia-audio and video. VRML already