Invokes the Exchange utility (EXCHANGE), which manipulates mass storage 
volumes that are written in formats other than those normally 
recognized by the operating system.
EXCHANGE allows you to perform any of the following tasks:
  - Create foreign volumes.
  
 - Transfer files to and from the volume.
  
 - List directories of the volume.
 
For block-addressable devices, such as RT-11 disks, EXCHANGE performs 
additional operations such as renaming and deleting files. EXCHANGE can 
also manipulate Files-11 files that are images of foreign volumes; 
these files are called virtual devices.
For more information about EXCHANGE, see the OpenVMS Exchange Utility Manual (available 
on the Documentation CD-ROM) or online help.