Gentlemen, man cat says SEE ALSO tac(1)
The full documentation for cat is maintained as a Texinfo manual. If the info and cat programs are properly installed at your site, the com- mand info coreutils 'cat invocation' should give you access to the complete manual. Same with the rest of coreutils. But man xargs just says SEE ALSO find(1), locate(1), locatedb(5), updatedb(1), fork(2), execvp(3), kill(1), signal(7), Finding Files (on-line in Info, or printed) Man find says SEE ALSO locate(1), locatedb(5), updatedb(1), xargs(1), chmod(1), fnmatch(3), regex(7), stat(2), lstat(2), ls(1), printf(3), strftime(3), ctime(3), Finding Files (on-line in Info, or printed). Kindly standardize on the coreutils style. The findutils style is too cryptic and easily missed. Also embed (info "(find) Invoking find"), (info "(find) Invoking xargs"), etc. into the man page to make it even easier to get to the info page via Emacs C-x C-e. And let's hope coreutils will do that too.