Emilio C. Lopes: IMHO, the problem is with "more" not with "man". One must not try to adapt a good program just to make it work together with a deficient one (still IMHO, of course).
This is more a matter of interface definition than anything else. more can go backwards only on seekable files. less (and any other view that lets you go backward on a non-seekabe file) works by making an extra internal copy of the file. Since man already is perfectly equipped to provide a seekable file, it seems that taking advantage of this would be a good idea, both in terms of efficiency and in terms of flexibility. -- Raul