Qualifiers

/ERROR
      /ERROR=label

   Transfers control on an I/O error to the location specified by
   label (in a command procedure). If no error routine is specified
   and an error occurs during the writing of the file, the current
   ON condition action is taken. The /ERROR qualifier overrides any
   ON condition action specified. If an error occurs and control
   passes successfully to the target label, the reserved global
   symbol $STATUS retains the error code.


/SYMBOL
   Causes the expression to be interpreted and its expanded value
   placed in a 2048-byte (instead of a 1024-byte) buffer before
   the write operation is performed. If you specify multiple
   expressions, their values are concatenated and placed in the
   2048-byte buffer. Use the /SYMBOL qualifier to write a very large
   record.

   If you do not use the /SYMBOL qualifier, the entire command,
   including the expression or expressions, is placed in a 1024-byte
   buffer.


/UPDATE
   Replaces the last record read with the record specified with the
   expression parameter. You must be able to read and write to a
   file to use the /UPDATE qualifier. Use the WRITE/UPDATE command
   only after a READ command. The WRITE/UPDATE command modifies the
   last record you have read.

   With sequential files, you must replace a record with another
   record of the same size when you use the WRITE/UPDATE command.


/WAIT
      /WAIT (default)
      /NOWAIT

   If you specify /NOWAIT, the Put service to a mailbox device uses
   the IO$M_NOW modifier, which causes the operation to complete
   immediately instead of synchronizing with another reader of the
   mailbox.

   Currently this qualifier is supported on Alpha and Integrity
   servers only.