2007 Office System Document: User Interface Evaluation Design Guidelines
link: original article - section: microsoft
This information is provided to assist sofware developers in evaluating the scope of the UI Design Guidelines for the 2007 Microsoft Office suites prior to accepting the Office UI Licensing agreement.
The evaluation copy of the Design Guidelines comes with its own evaluation license, which states that the copy of the design guidelines should not be shared and should be destroyed 30 days after being downloaded.
For more information about the Office UI Licensing Program, see http://msdn.microsoft.com/officeui.
The download provides an evaluation copy of the Office User Interface (UI) Design Guidelines.