They are actually flight obstructions like tall buildings. They need to to have what kind of obstruction they are, Building, Tower, etc. and their height information, one of the the heights needs to be bold.
Space permitting we would like to spell out Building, and in dense areas we would like to Abbreviate to Bldg. I know I could make the expression:
"Bldg" + "<bol>" + [field2] + "</bol>" +"\n" + [field3]
and we could figure out some way to identify dense areas ahead of time (maybe using cartographic partitions) and tag the features ahead of time in a field "in_dense_area" and give it a boolean value and set those up into different classes:
False: "Building" + "<bol>" + [field2] + "</bol>" +"\n" + [field3]
True: "Bldg" + "<bol>" + [field2] + "</bol>" +"\n" + [field3]
Not quite the same effect as if the tools just worked the way I want them to though...