All comments should be made electronically within the PDF using the highlight / comment function in a PDF viewer. (glasslewis.com)
Because it's necessary to specify the name of your custom comment function each time you use it, you can make more than one should you need it. (stemlegal.com)
That way my beta readers can use Word's Track Changes and Comment functions for their notes, and that way I can now use these macros. (jamigold.com)