To enter Mail commands, invoke Mail at the DCL prompt ($) and
    then enter commands at the MAIL> prompt. These commands can be
    abbreviated to unique, shorter forms (usually as short as one
    letter). Note that D is the short form of the DELETE command
    (not the DIRECTORY command) and R is the short form of the REPLY
    command (not the READ command).

    Mail provides commands that enable you to do the following:

    o  Read and organize mail messages.

    o  Exchange mail messages with other users.

    o  Delete mail messages.

    o  Tailor your Mail environment.

    o  Exit from Mail or transfer control to another process while
       still in Mail.

    o  Make hardcopies of mail messages.

    The following table lists all the available Mail commands by
    functional category:

    Reading Messages         Organizing Messages

    BACK                     COPY
    CURRENT                  DIRECTORY
    FIRST                    FILE
    LAST                     MOVE
    NEXT                     SET FILE
    READ                     SET WASTEBASKET NAME
    SEARCH                   SHOW FILE
    SELECT                   SHOW WASTEBASKET NAME
    SHOW NEW_MAIL_COUNT

    Exchanging Messages      Removing Messages

    ANSWER                   COMPRESS
    FORWARD                  DELETE
    MAIL                     ERASE
    REPLY                    EXIT
    SEND                     PURGE

    Tailoring Mail
    Environment              Exiting or Transferring Control

    DEFINE/KEY               ATTACH
    EDIT                     EXIT
    HELP                     QUIT
    SET AUTO_PURGE           SPAWN
    SET CC_PROMPT
    SET COPY_SELF
    SET FORWARD              Mail Commands for System Managers
    SET MAIL_DIRECTORY
    SET PERSONAL_NAME        REMOVE
    SET SIGNATURE_FILE       SET FORWARD/USER=
    SHOW ALL                 SHOW FORWARD/USER=
    SHOW AUTO_PURGE          SHOW PERSONAL_NAME/USER=
    SHOW COPY_SELF
    SHOW FORWARD
    SHOW MAIL_DIRECTORY
    SHOW PERSONAL_NAME
    SHOW SIGNATURE_FILE

    Making Copies of Mail Messages

    PRINT
    EXTRACT