Skipping the TUI menu on login
I found a better way, rather than adding a nonstandard user (not
root), just change the shell for your target user. So, for admin, issue the command (as root):
chsh -s /bin/tcsh admin
The admin account has as its default shell /etc/rc.initial, which prints the menu and requisite prompt. Changing the account's default shell bypasses the menu quite cleanly. To restore the menu:
chsh -s /etc/rc.initial admin
...and you'll get the TUI menu on initial login.