  Unidel is a room-based UseNet newsreader, UseNet/UNIX/Internet
mailreader and BBS.

What is a Room Based Citadel System
-----------------------------------
  Unidel is a Citadel style (more specifically, a STadel style)
room-based system.  A room-based system is one that represents message
areas, conferences, newsgroups, etc. as 'rooms'.  At all times you are
'in' a room, you can read messages on the wall :-), add your own
message, up/download files (if allowed) or messages, talk to other
users, query information about yourself or the system, or go to
another room.  There is no main-menu and no separate file areas.
Rooms can optionally be grouped into floors to provide continuity.

  A Citadel style system is a room-based system that uses single
letter commands for basic navigation of rooms (read /N/ew messages,
/E/nter a new message, /G/oto the next room with new messages, /L/ist
files, /D/ownload file, /C/hat, query /Y/our information, /T/erminate
the session) and reading messages (/N/ext message, go /B/ack a
message, /D/ownload message, /S/top reading, add a /F/ollowup message,
/R/eply to author).  There are extended commands that are preceded by
a '.' and usually are one or two letters that allow for less used
commands (./E/nter /C/onfiguration, ./U/pload /M/essage, ./G/oto a
specific room by name).

  One of the basics of a Citadel is brevity and simplicity, get what
you want quickly and with little fluff.  When you /G/o to a room with
new messages you see this:

  Miscellaneous information about Macintosh Systems.
  [Computer Systems (UseNet)]
    540 messages
    84 new messages
  comp.sys.mac.misc> 

If you had already been on the [Computer Systems (UseNet)] floor, that
line would not have been displayed, if there had been no new messages
(i.e. you had asked to ./G/oto the room) that line would not have been
displayed.  As you read messages you are given the header of the
message like this:

  463/540 -- 91Nov04 9:26 am from Ken MacLeod@Bitsko's Bar and Grill
     Subject: A message to the masses
     Summary: Citadel Systems
  --More--(0%)


What Can Unidel Do
------------------
  As a news reader Unidel supports a full set of newsgroups
(thousands), Reply-To, Followup-To, header listing, read specific
messages, goto to specific rooms.  Unidel does not yet support
threading or kill files.

  As a secure shell (for dial-in BBS) Unidel limits access to external
programs and uses only 'rsh' when calling external programs.

  As a mail reader Unidel supports separate mail rooms (based on
content or header using Chip Salzenberg's Deliver or similar), address
validation for better delivery, user-defined headers.

  Unidel relies on the underlying news system (CNews or BNews) to
provide message distribution, expiration, etc.

  As a BBS Unidel supports Chat or CB, file transfer (external
programs), full-screen editing (external), 
