Makes unknown to the NFS server either a mapped (logically
    linked) OpenVMS disk or a container file system.
    Unmapping removes a logical file system, also called Network File
    System (NFS). Unmapped file systems are not accessible to remote
    users working on NFS clients.
    Related commands: MAP, SHOW MAP, SET CONFIGURATION NOMAP, ADD
    EXPORT, SHOW EXPORT, REMOVE EXPORT, MAP, UNMAP, SET CONFIGURATION
    MAP, SET CONFIGURATION NOMAP, SHOW MAP, SHOW CONFIGURATION MAP
    Applies to: NFS server
    Format
      UNMAP "/path/name"  [ /[NO]CONFIRM ]
Additional Information:
explode
extract