2.1.1 [DOM Level 2 - Views] Section 1.1, Introduction

V0002:

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."