Notes from Jacob K.:

apropos: search the whatis database

man: format and display the on-line manual pages

man.conf:

whatis: search the whatis database (same as apropos)

info: read Info documents

share/doc/: /usr/share/doc or /usr/local/share/doc/ contains copies of the FreeBSD manual

share/examples/: /usr/share/examples/ or /usr/local/share/examples/ contains copies of default and example configuration files