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     TLK IS AN UNSUPPORTED PROGRAM, AND IS NOT  INCLUDED  AS
AN  EXAMPLE  TO BE FOLLOWED AS IT DOES NOT MEET THE PROTOCOL
REQUIREMENTS  SET   FORTH   BY   THE   FORMAL   DECNET   TLK
SPECIFICATION.   IN  ADDITION,  IT  HAS  ONLY BEEN TESTED IN
CONJUNCTION WITH RSX-11M, RSX-11D, AND  IAS.   IT  HAS  BEEN
INCLUDED  ON  THE  SWSKIT  AS  IT  MAY  SERVE  AS  A  USEFUL
(UNSUPPORTED) DEMO,  NETWORK  TEST,  OR  SAMPLE  OF  NETWORK
CODING, BUT SHOULD BE USED WITH CAUTION.


     The TLK program is a  very  simple  minded  routine  to
interface  into  the  TLK/LSN  utilities  supplied  on other
DECnet systems.  This version of TLK does the  job  of  both
TLK  and LSN.  The interface into the TLK/LSN dialogue is of
such  simplicity  that  any  valid  message  over  the   LSN
connection  will  be printed upon the controlling terminal's
printer or display  without  regard  as  to  the  source  or
destination terminal address specified in the connect data.

     In order to run  the  TLK  program  the  user  must  be
ENABLEd  OPERATOR  or  WHEEL  BECAUSE  the SRV:  side of the
TLK/LSN  pair  opens  a  non-zero  object  type   (reference
DECnet-20  manual).   Once  TLK  has  started and opened the
server side of the TLK/LSN pair, TLK will ask what node  you
wish  to start your dialogue.  Note that it does not ask for
a terminal identification  as  it  ALWAYS  connects  to  the
Console  Terminal  (terminal  #  -1)  ON THE OTHER END.  The
prompt will be:

HOST NAME FOR SEND:

     After giving the above prompt,  TLK  will  prompt  will
with:

TLK>

At this time you may type any message you wish, ended  by  a
<CR>.   If  at  any  time  you  wish  to  change  systems to
communicate with, type Control-E (^E)  at  the  TLK  prompt.
This  will  cause the program to cycle up to the Host prompt
and you may repeat the cycle.

     The following is a  short  example  of  using  the  TLK
program to talk to yourself

     BY USING YOUR OWN SYSTEM AS HOST NAME:

 2102 Development System, TOPS-20 Monitor 4(2224)
@LOG MEIDELL
 Job 22 on TTY227 25-Oct-78 12:57:38
 End of PS:LOGIN.CMD.6
@ENABLE
$TLK
HOST NAME FOR SEND: 2102
TLK>HI THERE

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[2102]HI THERE
TLK>^C
$