2.1.442 Part 1 Section 17.15.2.33, optimizeForBrowser (Disable Features Not Supported by Target Web Profile)

a.   The standard states that this element (in conjunction with the other elements listed) is used to set the target web browser.

Word does not use the indicated settings to determine target browser when document is loaded, instead using Internet Explorer 6 as the target browser in every case.

b.   The standard states that the target attribute should specify which HTML profile to use when saving docs to HTML.

Word ignores this attribute.