Acrobat, really, but as it's part of a FrameMaker workflow ...
I'll come clean straight off and admit I've cross-posted this to the Acrobat forum ... but I'll bet someone here knows the answer too! [Acrobat Pro Extended 9.3.2 on XP] Finished my own review of the comments in a comment-enabled document; selected "Create pdf of comments summary" (separate page); received pdf with original content visible and comments shown as black boxes. Not very helpful! Hints and tips on getting the comment summary I'm used to (and have had before) welcome – thanks in advance.