>> Physical Review was an early adopter of troff, > Oh, interesting. I admit i submitted my own publications > in Phys Rev D in LaTeX in 2000 and didn't know at the time troff > would have been an option.
Phys Rev A adopted troff for their in-house typesetting soon after the advent of eqn. It was a bold move; the journal sports ferocious equations. Really long ones could extend to full-page width in the middle of 2-column text. I doubt any current macro package can do that. (Perhaps Phys Rev couldn't either. They may have set galleys, not pages.) Doug