Shows devices currently known to EXCHANGE.

 Format
         EXCHANGE>  SHOW
 Prompts
         None.

Additional information available:

DescriptionExample

      This command  shows  the  volumes  known  (mounted)  at  the
      current time, along with the attributes of the volumes.

  1.   EXCHANGE> mount cs1:
       %EXCHANGE-S-MOUNTED, the RT-11 volume DELPHI$CSA1: has been mounted
       EXCHANGE> mount/virtual d: console
       %EXCHANGE-S-MOUNTVIR, the RT-11 virtual volume D: has been mounted
                 using the file CW:<BACKUP.SRC>CONSOLE.DSK;1
       EXCHANGE> show
       Mounted volumes:
        D:
               volume format:          RT-11
               volume class:           disk  (virtual volume)
               virtual file name:      CW:<BACKUP.SRC>CONSOLE.DSK;1
               volume size:            512 blocks
        DELPHI$CSA1:
               volume format:          RT-11
               volume class:           disk
               physical device name:   DELPHI$CSA1:
               volume size:            494 blocks