If you want the description for a particular Word object, look at the description in whatever screen you used to insert it. Frankly, even that won't mean anything to a graphics designer who doesn't use Word - and few if any would for book production. In any event, if you're supplying the final copy, they probably don't even need to know, since they can probably just import your Word document's content.

FWIW I think you're straying too far into the publisher's domain. Your role should be to manage the content and leave them to manage the area for which they have the expertise (design and layout).

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]