> I'm still having trouble figuring out what you think is wrong with groff > 1.23.0 relative to 1.22.4.
Stripped to the bone, this example .LP .bp .AB .AE is accepted by 1.22.4 but not by 1.23.0. And, yes, I do have a previously working -ms document that contains these lines in this order, though not contiguously. Doug