2.1 Normative Variations

The XDomainRequest object [XDomainRequest] is supported in IE8 Mode, IE9 Mode, and IE10 Mode (all versions). The @font-face rule [CSS-FontsLevel3] is supported in IE9 Mode, IE10 Mode, IE11 Mode, and EdgeHTML Mode (all versions). The crossorigin attribute for the img element [HTML5] is supported in IE11 Mode and EdgeHTML Mode (all versions) and cross-origin canvas behavior is partially supported in IE9 Mode and IE10 Mode (all versions) and supported in IE11 Mode and EdgeHTML Mode (all versions). All of these features involve cross-origin resource sharing [CORS] behavior, as required by their normative specifications and/or as implemented by Microsoft.

The following subsections describe normative variations from the MUST requirements of [CORS].

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