.COMMENT BILL KORENDYK OCTOBER 4, 1977
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^^ASD##COMPUTING##GROUP\\
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^^A#MESSAGE#SENDING#FACILITY
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SND
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OCTOBER#4,#1977
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.CHAPTER INTRODUCTION\\
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\\<SND IS A LOCALLY WRITTEN AND SUPPORTED PROGRAM WHICH ALLOWS A
 MESSAGE TO BE SENT FROM ONE TERMINAL TO ANOTHER. ^WITH <SND, A
MESSAGE OF ANY LENGTH CAN BE SENT FROM THE ISSUING 
TERMINAL TO ANY ONE OR ALL OF THE OTHER AVAILABLE TERMINALS. 
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.CHAPTER ^^HOW TO SEND A MESSAGE\\
.TITLE ^^ ###############HOW TO SEND A MESSAGE\\
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<SND, LIKE ALL ^C^U^S^P'S (^COMMONLY ^USED ^SYSTEM ^PROGRAMS)
CAN BE INVOKED BY TYPING
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<SND
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FOLLOWED BY A CARRIAGE RETURN. ^THE PROGRAM THEN PROMPTS WITH
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<SND>
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INDICATING THAT IT IS READY TO ACCEPT THE ^^COMMAND STRING\\. ^THE
COMMAND STRING INDICATES THE TERMINAL TO WHICH THE
MESSAGE IS TO BE SENT AND AN INDICATION OF THE SENDERS NAME:
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^^TT3:MARK\\
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^THE COMMAND STRING IS TERMINATED WITH A CARRIAGE RETURN, AND IF
IT IS ACCEPTED BY THE PROGRAM, <SND PROMPTS WITH AN ASTERISK (*)
INDICATING THAT THE MESSAGE CAN NOW BE TYPED. ^AFTER EACH LINE IS
TYPED AND TERMINATED WITH A CARRIAGE RETURN <SND RETYPES AN
ASTERISK INDICATING ITS READYNESS FOR FURTHER MESSAGE LINES. ^THE
ENTIRE MESSAGE CAN BE TERMINATED  BY TYPING A <CTRL/Z, 
AT WHICH TIME THE PROGRAM TERMINATES AND THE MESSAGE IS SENT. 
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^^COMMAND STRING\\
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^THE COMMAND STRING INDICATES TO <SND THE TERMINAL TO WHICH THE MESSAGE
IS TO BE SENT AND THE PERSON FROM WHOM THE MESSAGE ORIGINATES. ^FOR
EXAMPLE, THE COMMAND:
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^^TT3:MARK\\
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TYPED AT ^T^T5: CAUSES THE FOLLOWING LINE TO BE PRINTED AT <TT3:
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^^MESSAGE FROM MARK AT TT5:\\
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^IF THE NAME IS NOT GIVEN AS IN THE FOLLOWING COMMAND:
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<TT3:
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^THEN THE LINE PRINTED AT <TT3: IS
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^^MESSAGE FROM THE "PERSON" AT TT5:\\
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^IF AN ASTERISK (*) IS USED IN PLACE OF THE ^T^TX, THEN THE MESSAGE
IS SENT TO ALL TERMINALS, (NOTE, THE COLON (:) MUST ALWAYS  BE PRESENT)
FOR EXAMPLE
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^^*:OPERATOR\\
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^AS WITH MOST ^C^U^S^P'S, IT IS POSSIBLE TO INCLUDE THE COMMAND STRING
WITH THE ISSUANCE OF THE <SND COMMAND. ^FOR EXAMPLE
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^^SND##TT3:MARK\\
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CAUSES THE PROGRAM TO PREPARE FOR THE SENDING OF THE MESSAGE TO <TT3: 
AND PROMPT IMMEDIATLY WITH AN ASTERISK (*). 
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^IN ADDITION, ONE LINE MESSAGES MAY BE SENT BY USING:
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^^SND##TT3:MARK\\/MESSAGE
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AND THEN ONLY THE "MESSAGE" IS SENT AND NO PROMPT IS MADE FOR A FURTHER
MESSAGE.
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^IF THE FIRST CHARACTER OF THE MESSAGE IS AN AT-SIGN (@), REGARDLESS
OF THE METHOD USED, THE REMAINDER IS TAKEN AS THE FILE NAME OF A FILE
CONTAINING THE MESSAGE. ^THE ENTIRE CONTENTS OF THE SPECIFIED FILE
ARE SENT AND EXECUTION OF ^S^N^D IS TERMINATED.