Visudo

visudo - a wrapper that must be called to edit the sudoers file, which controls which users are allowed to use the sudo application, and how. On FreeBSD systems, visudo will use vi or whatever program is referenced in the EDITOR environment variable as the actual editor for the sudoers file.

If you aren't fond of vi, and you have not done so already, it is highly recommended that you change your EDITOR environment variable to ee or some other more friendly text editor before running visudo.

ph34r# which ee
/usr/bin/ee
ph34r# setenv EDITOR /usr/bin/ee
ph34r#