Section 6.5 looks like it last saw an overhaul back in the 1.4.2
days.  Some text should be added to note that one needs to specify
"-G wheel" if one wants that account to be able to su to root.
Maybe with a footnote that sshd disables remote root logins by
default.  This is usefull if someone is setting up a server thats
tucked into a closet. [#-)

Is the guide tracked via PRs?  No category jumped out at me using
the web interface.  Or is "install" with type "doc" being used?

-=erik.