Reading man pages without man.

zcat /usr/share/man/man1/ls.1.gz | groff -Tascii -man | less -R

This unzips and cats a compressed man page through groff to format it, and then to less so that you can scroll. The -R, which you may or may not need, prevents certain ANSI escape sequences from showing as “ESC [ …” garble (the same situation with git is described here).