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I've found that Word's grammar checker is good for "passive voice" errors.
The rest... well, at least it's customizable.
Trish Green
Malachite Finch Publications, Ltd.
----- Original Message -----
From: Jean Weber <jean -at- wrevenge -dot- com -dot- au>
<snipped>
I don't consider any of them worth wasting time on. Word's is handy for
finding some types of errors, but only if you can recognize which errors
are real ones.