
Valid server commands are:

PATH <path>
    Specify return path. Use this if you are not sure that
    your mail system generates correct return addresses.

LIMIT <number>
    Maximum number of bytes to be sent per mail transfer.
    Default is 64K bytes.
    The limit applies to subsequent "send" commands.

UUENCODE
BTOA
    Specify encoding to be used. Default is UUENCODE.
    The encoding applies to subsequent "send" commands.
    Use "send btoa" to obtain the btoa/atob support programs.

SEND <item> [<item>...]
    Specify files to be sent.
    Use "send index" for a list of items.

RESEND <item> <part> [<part>...]
    Re-sends the indicated <parts> from the specified <item>.
    The encoding and limit must be identical to those used in the
    original request.

HELP
    This message.
    Use "send help" for a detailed description on how to use
    the archive server.

END
EXIT
    Terminate command processing. The remainder of
    the input will be ignored.

Case is insignificant in the command verbs, but it IS
significant in the <path> and <item> specifications.
