2.1.1 [DOM Level 2 - Views] Section 1.1, Introduction
The specification states:
In order to fully support this module, an implementation must also support the "Core" feature defined defined in the Document Object Model Level 2 Core specification [DOM Level 2 - Core]. Please refer to additional information about conformance in the DOM Level 2 Core specification.
Quirks Mode, IE7 Mode, and IE8 Mode (All Versions)
The "Core" feature is not fully supported. The hasFeature method of the DOMImplementation interface returns
false for the "Core" module and the version strings "1.0" and "2.0."