Hi Ganesh,
Actually it is called Doc Type Definition (DTD), 3 types available: strict, transitional, and frameset
Strict:
This DTD contains all HTML elements and attributes, but does NOT INCLUDE presentational or deprecated elements (like font). Framesets are not allowed.
Transitional:
This DTD contains all HTML elements and attributes, INCLUDING presentational and deprecated elements (like font). Framesets are not allowed.
Frameset:
This DTD is equal to HTML Transitional, but allows the use of frameset content.
Regards,
Team SiliconIndia
Mar 11, 2010
