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 This program is the TOPS-20 implementation of the DECnet
DTS/DTR test system. As such, it provides the user interface
to the DTR/DTS tests on the DECsystem-20. The commands
implemented here have been structured as closely as was
possible to the command syntax implemented by the RSX-11M
DTS.

 The command syntax is described in a BNF like meta notation
whose description follows. The meta notation is defined in
terms of its own syntax. The word 'identifier' is used to
denote 'nonterminal symbol', and 'literal' stands for
'terminal symbol'.


	syntax = {production}.

	production = identifier "=" expression".".

	expression = term{"|"term}.

	term = factor{factor}.

	factor = identifier|literal|"("expression")"|
		 "["expression"]"|"{"expression"}".

	literal = """"character{character}"""".

 Repetition is denoted by curly brackets, i.e. {a} stands
for nothing|a|aa|aaa|.... Optionality is expressed by square
brackets, i.e. [a] stands a|nothing.  Parentheses merely
serve for grouping, e.g. (a|b)c stands for ac|bc. Terminal
symbols, i.e. literals, are enclosed in quote marks.

 This is the currently defined command syntax for DTS:


DTS>"HELP" ["(WITH DTS)"].

DTS>"TAKE" ["(COMMANDS FROM)"] command_file ["(LOGGING OUTPUT ON)"] [log_file].

DTS>"TEST" [node_name] ["/TEST:""CONNECT"|"DATA"|"DISCONNECT"|"INTERRUPT"]
			["/PRINT:""YES"|"NO"].

DTS>"WAIT" ["(AND DON'T PROMPT)"].

DTS>"EXIT" ["(TO MONITOR)"].


 Subcommands to TEST command are:

CONNECT_TEST>["ACCEPT"|"REJECT"] ["/DATA:""STANDARD"|"NONE"|"RECEIVED"]

DISCONNECT_TEST>["DISCONNECT"|"ABORT"] ["/DATA:""STANDARD"|"NONE"|"RECEIVED"]

DATA_TEST>["SINK"|"SEQUENCE"|"PATTERN"|"ECHO"] ["/MSG:"nnn] ["/BUFS:"nnn] 
	["/TIME:"hh":"mm":"ss] ["/BAUD:"nnnnn] ["/NAK:"("NONE"|"RANDOM"nnn)] 
	["/BPC:"("NONE"|"RANDOM"nnn)] [/NO-FLOW-CONTROL] 
	["/MESSAGE-FLOW-CONTROL:"nnn] ["/SEGMENT-FLOW-CONTROL:"nnn]

INTERRUPT_TEST>["SINK"|"SEQUENCE"|"PATTERN"|"ECHO"] ["/TIME:"hh":"mm":"ss]
	["/MSG:"nnn] ["/FLOW:"nnn]