Executes a command procedure or requests the command interpreter
    to read subsequent command input from a specific file or device.

    Format

      @  file-spec

1 - Parameter

 file-spec

    Specifies either the input device or the file for the preceding
    command, or the command procedure to be executed.

2 - Qualifiers

    None.

3 - Example

  $ CREATE COUNT.COM
  SHOW DEVICE/COUNTERS EIA
  SPAWN WAIT 00:01:00
  @COUNT
 <Ctrl/Z>

  $ RUN SYS$SYSTEM:LANCP
  LANCP> @COUNT

  Device Counters EIA0:
     Value  Counter
     -----  -------
     62030 Seconds since last zeroed
  19910982 Bytes received
    239192 Bytes sent
    155812 Packets received
      4348 Packets sent
  19910982 Multicast bytes received
    239140 Multicast bytes sent
    155812 Multicast packets received
      4346 Multicast packets sent
         0 Unrecognized unicast destination packets
    134311 Unrecognized multicast destination packets
         0 Unavailable station buffers
         0 Unavailable user buffers
         0 Alignment errors
         0 Frame check errors
         0 Frame size errors
         0 Frame status errors
         0 Frame length errors
         0 Frame too long errors
         0 Data overruns
         0 Send data length errors
         0 Receive data length errors
         0 Transmit underrun errors
         0 Transmit failures
         0 Carrier check failures
         0 Station failures
         0 Initially deferred packets sent
         0 Single collision packets sent
         0 Multiple collision packets sent
         0 Excessive collisions
         0 Late collisions
         0 Collision detect check failures
         1 Link up transitions (19-OCT-2004 13:47:50.86)
         0 Link down transitions
      None Time of last generic transmit error
      None Time of last generic receive error

      This example creates and runs a command procedure, COUNT.COM,
      that displays device counters once every minute.