Special files :
- configuration : /etc/ax25/fbb.conf
- mail import   : /var/ax25/fbb/mail/mail.in

binaries :
----------
/usr/sbin

configuration tree :
--------------------
/etc/ax25/fbb
            \_ lang

utilities tree :
----------------
/usr/lib/fbb
           |\_ filter
           |
           |\_ pg
           |
           |\_ script
           |        |\_ error_return
		   |        |
           |        |\_ end_session
		   |        |
           |        |\_ rerun
		   |        |
           |        |\_ maintenance
		   |        |
           |        |\_ stop_system
		   |        |
           |        |\_ sig_segv
		   |        |
		   |         \_ reset
		   |
           |\_ server
           |
            \_ tool

data tree :
-----------
/var/ax25/fbb
           |\_ docs
           |
           |\_ log
           |
           |\_ oldmail
           |
           |\_ sat
           |
           |\_ wp
           |
           |\_ fbbdos
           |      \_ yapp
           |
           |\_ mail
           |      \_ mail[0-9]
           |
            \_ binmail
                  \_ mail[0-9]
