>I too was confused by the use of the word "opaque". It's a standard term in data structures, for a thing which A hands to B, and B can only use to hand back to A, not peek inside it.
So I guess it's closest to this: >3.a) So obscure as to be unintelligible >Not wanting to beat a dead horse - if this has already been flogged, >please forgive me. You're forgiven. If you ever come up to Cambridge, we can arrange in person forgiveness, preferably with beer. R's, John _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html
