Thank you, Greg. I have visited your site a number of times and have gained from it. My own weaknesses, however, have kept me from gaining enough to tell from the macro you have just kindly supplied me what I should do with it to experiment. I tried simply running it in a document of several paragraphs, and then tried first selecting a number of words and running it. Both returned "compile" errors, undoubtedly Word's polite way of suggesting that I am clearly incompetent, a suggestion with which, respecting The Dominions of VBA, I readily agree without reservation.
Learning coding, after several failed attempts on my own over the years, is not at the top of my list; my work does not require it, and I am obliged to attend to other priorities. Again, however, I do appreciate your taking the time and concern to assist me with this issue, for which Paul's solution will meet my limited needs.

Best,
Philip