Thanks, Paul. However, as you recognize, when attached to the heading, it adds space there. In that particular case, the heading, which is styled 9/6 above/below, regains a proportional spacing. However, if I move the box down to, say, a second or third paragraph of text -- such boxes are not always used with headings -- I get the additional space more obviously.

I remain perplexed as to what is causing the space to be added at all.

Philip