Thanks to both.
Vern, please let me ask if there is a missing "not" in your second sentence: "The clause does not limit the government's rights to data that have [not???] been delivered."
And good point about 'deferred delivery' lurking in the background. Another good point on the user's manual, I don't think we'd provide information in theuser's manual that would be that sensitive....but what about meetings, reviews, technical interchange meetings, etc, etc<--Thanks for the reminder, thanks, BWW