NUMBER:  30

  ERROR CODE:  F

  MESSAGE TEXT:  open failure

  EXPLANATION:  An error was detected by RMS while attempting to open
  a file in an OPEN, INQUIRE, or other I/O statement.  This message
  is issued when the error condition is not one of the more common
  conditions for which specific error messages are provided.  It can
  occur when an OPEN operation is attempted for one of the following:

   o  A segmented file that was not on a disk or a raw magnetic tape

   o  A standard process I/O file that has been closed