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DOCTYPE

From WHATWG Wiki
Revision as of 14:48, 28 May 2007 by Beowulf (talk | contribs) (New page: == About == DOCTYPEs are required for legacy reasons. When omitted, browsers tend to use a different rendering mode that is incompatible with some specifications. Including the DOCTYPE in...)
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About

DOCTYPEs are required for legacy reasons. When omitted, browsers tend to use a different rendering mode that is incompatible with some specifications. Including the DOCTYPE in a document ensures that the browser makes a best-effort attempt at following the relevant specifications.

Form

A DOCTYPE must consist of the following characters, in this order:

A U+003C LESS-THAN SIGN (<) character. A U+0021 EXCLAMATION MARK (!) character. A U+0044 LATIN CAPITAL LETTER D or U+0064 LATIN SMALL LETTER D character. A U+004F LATIN CAPITAL LETTER O or U+006F LATIN SMALL LETTER O character. A U+0043 LATIN CAPITAL LETTER C or U+0063 LATIN SMALL LETTER C character. A U+0054 LATIN CAPITAL LETTER T or U+0074 LATIN SMALL LETTER T character. A U+0059 LATIN CAPITAL LETTER Y or U+0079 LATIN SMALL LETTER Y character. A U+0050 LATIN CAPITAL LETTER P or U+0070 LATIN SMALL LETTER P character. A U+0045 LATIN CAPITAL LETTER E or U+0065 LATIN SMALL LETTER E character. One or more space characters. A U+0048 LATIN CAPITAL LETTER H or U+0068 LATIN SMALL LETTER H character. A U+0054 LATIN CAPITAL LETTER T or U+0074 LATIN SMALL LETTER T character. A U+004D LATIN CAPITAL LETTER M or U+006D LATIN SMALL LETTER M character. A U+004C LATIN CAPITAL LETTER L or U+006C LATIN SMALL LETTER L character. Zero or more space characters. A U+003E GREATER-THAN SIGN (>) character.


Example

<!DOCTYPE HTML>