If the markup is not valid according to the DTD being used, the editor drops out of HTML mode and only the free text editing mode works. Checkpoint 3.4 Do not automatically generate equivalent alternatives. Do not reuse previously authored alternatives without author confirmation, except when the function is known with certainty. Word does not generate alternatives. Checkpoint 6.1 Document all features that promote the production of accessible content.
Word provides an accessibility section in the documentation.
A text-only version of Word accessibility features is available on the Web. HotMetal documents accessibility features. Checkpoint 7.2 Allow the author to change the presentation within editing views without affecting the document markup. Amaya implements user-side style sheets, and allows the author to disable linked stylesheets in a user session. Checkpoint 7.3 Allow the author to edit all properties of each element and object in an accessible fashion.