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Document Type Declarations

The first part of an HTML document specifies which version of HTML is used in the document. The document type declaration names the DTD used by the document (see [GOLD90]).

There are three DTD's specified for use with HTML 4.0, one of which must be included in the document. Each DTD varies in the elements it supports.

  • HTML 4.0 Strict DTD

    All elements and attributes that have not been deprecated.

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">

  • HTML 4.0 Transitional DTD

    Includes everything in the strict DTD as well as deprecated elements and attributes. (Most of the deprecated elements and attributes cover visual presentation.)

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">

  • HTML 4.0 Frameset DTD

    Includes everything in the Transitional DTD as well as frames

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN" "http://www.w3.org/TR/REC-html40/frameset.dtd">

DTDs and entity sets for HTML 4.0 supported by W3C

HTML 4.01 Tags


Up to => Home / Authoring / HTML / 4 / Tags




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