Suzanne, are you just drawing that conclusion from observation,
or is it actually documented anywhere?

(I've been searching Word's own help, and microsoft.com,
but so far I haven't discovered any info on the subject -
there are some more exotic looking features on dialogues
for international text, but they're not expilictly labelled as
being to do with OpenType -
As far as ordinary Latin text goes, in the Format Font dialogs
for example, there's mainly just all this rubbish about "marching ants"
and the like - I somehow doubt that's OpenType functionality :0)

It's funny, cos Microsoft have been one of the big developers of OpenType,
and www.microsoft.com/typography is full of papers and developer
resources dealing with it - you'd think they'd implement it in their
own main application for dealing with text!