Examples

   1.$ OPEN IN NAMES.DAT
     $ LOOP:
     $ READ/END_OF_FILE=ENDIT IN NAME
        .
        .
        .
     $ GOTO LOOP
     $ ENDIT:
     $ CLOSE IN

     The OPEN command opens the file NAMES.DAT for input and assigns
     it the logical name of IN. The READ command reads records from
     the file IN and places the contents into the symbol NAME. The
     READ command specifies the label ENDIT to receive control when
     the last record in the file has been read. The procedure loops
     until all records in the file have been processed.

   2.$ READ/ERROR=READERR/END_OF_FILE=OKAY  MSGFILE  CODE
        .
        .
        .
     $ READERR:
     $ CLOSE MSGFILE
        .
        .
        .
     $ OKAY:
     $ CLOSE MSGFILE
     $ EXIT

     The READ command reads records from the file MSGFILE and
     places the contents into the symbol CODE. The READ command
     also uses the /ERROR and /END_OF_FILE qualifiers to specify
     labels to receive control at the end-of-file (EOF) and on
     error conditions. At the EOF, control is transferred to the
     label OKAY. On other read errors, control is transferred to the
     READERR label.

   3.$ READ SYS$COMMAND  DATA_LINE
     $ WRITE  OUTPUT_FILE  DATA_LINE
        .
        .
        .

     The READ command requests data from the current SYS$COMMAND
     device. If the command procedure containing these lines is
     executed interactively, the command issues a prompt to the
     terminal, accepts a line of data, and equates the data entered
     to the symbol name DATA_LINE.

     Then the WRITE command writes the value of the symbol DATA_LINE
     to the file identified by the logical name OUTPUT_FILE.

   4.$ OPEN/READ INPUT_FILE TRNTO::INVENTORY.DAT
     $ OPEN/APPEND OUTPUT_FILE RECEIVE.DAT
     $ READ INPUT_FILE DATA_LINE
     $ WRITE OUTPUT_FILE DATA_LINE

     The OPEN/READ command opens the file INVENTORY.DAT at the
     remote node TRNTO for reading and assigns it the logical name
     INPUT_FILE. The OPEN/APPEND command opens the file RECEIVE.DAT
     in the current default directory. The READ command requests
     data from the file INVENTORY.DAT at the remote node TRNTO. The
     WRITE command writes the value of the symbol DATA_LINE to the
     end of the local file RECEIVE.DAT.