The SET SIGNATURE_FILE command enables you to automatically
    append a file to the end of a mail message whenever you use
    the ANSWER, FORWARD, MAIL, REPLY, or SEND command. An example
    of a signature file is a text file formatted as business card,
    containing the user's company name, address, telephone, and
    Internet address.

    The SHOW SIGNATURE_FILE command shows whether you have specified
    a default signature file and displays the name of that file. (The
    SHOW ALL command also displays signature file information.)

    The SET NOSIGNATURE_FILE command disables the default setting.
    No signature file will be appended automatically to any mail
    messages until you re-enter the SET SIGNATURE_FILE command.
    If you want to temporarily disable or override (to append
    a different signature file) the default setting only while
    sending a particular mail message, use the /SIGNATURE_FILE or
    /NOSIGNATURE_FILE qualifier with the ANSWER, FORWARD, MAIL,
    REPLY, or SEND command.

    You can also set, disable, or override the default signature
    file at the DCL level by using the /SIGNATURE_FILE or
    /NOSIGNATURE_FILE qualifier with the DCL command MAIL.

    Note that when you create a mail message that includes a
    signature file, that message requires more temporary disk space
    than a conventional message because temporary files are created
    during the operation. After the message is sent, those temporary
    files are deleted.

    Format

      SET SIGNATURE_FILE  file-name

      SET NOSIGNATURE_FILE

      SHOW SIGNATURE_FILE