IE=7: Display in Internet Explorer 7 Standards mode. This has been extended up to and including Internet Explorer 11 in order to support the Compatibility View feature - or, at least, document modes. This change lets users view both fully compliant sites and compatibility views of web content that required Internet Explorer 7. In Internet Explorer 8, Microsoft introduced compatibility options to allow Internet Explorer to act as if it were Internet Explorer 7.
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The declaration determines whether the webpage renders some specific Quirks mode emulation (QME) behavior that is specified in the MS-HTML5 and MS-CSS21 documentation.įor more information about how to configure document modes, see the following articles:
If none of these rules apply, the declaration determines whether the webpage renders in Standards mode, Almost Standards mode, or Quirks mode.
But if there's no valid declaration, Internet Explorer uses Quirks mode. For example, if an HTML page contains a valid declaration (see HTML5), Internet Explorer uses one of the standards-based document modes.
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However, Windows Internet Explorer uses several criteria to determine which document mode to use. By default, Windows Internet Explorer 8 uses Internet Explorer 8 mode, and Windows Internet Explorer 9 uses Internet Explorer 9 mode, and so on.