Deletes all the messages in the WASTEBASKET folder. When you
    EXIT from Mail or enter a SET FILE command (to select a new mail
    file), an implicit PURGE is done to empty the WASTEBASKET folder,
    unless you have entered the SET NOAUTO_PURGE command. The PURGE
    command overrides the SET AUTO_PURGE command.

    Purged message space is not available for reuse by OpenVMS Record
    Management Services (OpenVMS RMS) until you enter the PURGE
    /RECLAIM command. An automatic PURGE/RECLAIM is done when the
    amount of deleted space in a mail file exceeds 32,767 bytes.
    (Mail uses the Convert/Reclaim utility to reclaim space.)

    Format

      PURGE