That doesn't happen, and nobody seems to miss it. If the shell can avoid a lot of complexity handling multiple versions of programs, I suspect it may not be necessary for documentation either.
Indeed. Which is why I don't understand why we're having this whole thread. Sorry. It seems to me that symlinks, configure --infodir, INFOPATH, multiple dir files, whatever ..., is already enough mechanism, and any attempt to explicitly support multiple versions of manuals will just lead to madness. k