HTML Version

Information about HTML Version 

A valid HTML document that will declare HTML used in the document.
Known as document type definition DTD (Document Type Definition).
In HTML 4.01, there are 3 DTD and every author of the document must include one of them, 3 DTD are:
  • HTML 4.01 Strict DTD, attributes include all elements of distinction that is outdated or does not appear at frameset document. For documents that use this DTD type, type declaration is:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
  • HTML 4.01 Transitional DTD, include all that is in strict DTD plus elements and attributes that are not used. For documents that use this DTD type, type declaration is:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
  • HTML 4.01 Frameset DTD, include all that is on the transitional DTD plus frames. Fatherly documents that use this DTD type, type declaration is:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN"
"http://www.w3.org/TR/html4/frameset.dtd">

And URLs In each of the DTD will allow browsers to download the DTD and the entity required.
 
Some URLs include:
  • "strict dtd"--default strict DTD
  • "loose.dtd"--loose DTD
  • "frameset.dtd"--DTD for frameset document
  • "HTMLlat1.ent"--Latin-1 entities
  • "HTMLsymbol.ent"--Symbol entities
  • •"HTMLspecial.ent"--Special entities

Entity or a special code used to write a lot of special symbols such as Greek letters and other symbols.

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