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There are two commands, send, and reply, for a simple electronic mailing system. Assuming that each message has a unique name, give specifications in extended
There are two commands, send, and reply, for a simple electronic mailing system. Assuming
that each message has a unique name, give specifications in extended BNF for
these commands. The requirements are:
A message can be sent by a user to one or more users in the system.
A user can reply to only one mail at a time. The effect of reply is to compose a
message, assign a unique name, assign a timestamp, and send the message to the
user from whom the original message was received.
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