Command_procedures

   Performing operations specific to command procedures.

 @                 Describes how to invoke command procedures.
 Lexical           Describes functions that can be used in expressions.
 Specify           Describes valid values and expressions.
 Symbol_Assign     Describes symbol assigments statements.

 CALL              Transfers control to a labeled subroutine in a 
                   command prodecure and creates a new procedure level.
 DECK              Marks the beginning of a special input stream.
 DELETE/SYMBOL     Deletes one or more names from a symbol table.
 ENDSUBROUTINE     Ends a CALL subroutine and returns control to the 
                   command following the CALL command.
 EOD               Marks the end of a special input stream.
 EXIT              Terminates a command procedure.
 GOSUB             Transfers control to a labeled subroutine in a 
                   command procedure.
 GOTO              Transfers control to a label in a command procedure.
 IF                Executes a command only if an expression is true.
 INQUIRE           Requests input and assigns the result to a symbol.
 ON                Specifies an action to perform when a condition occurs.
 RETURN            Terminates a GOSUB subroutine procedure and returns
                   control to the command following the calling GOSUB
                   command.
 SET CONTROL       Controls the use of the CTRL/T and CTRL/Y keys.
 SET ON            Sets error checking on or off.
 SET RESTART_VALUE Sets the value of a batch job restart symbol.
 SET VERIFY        Displays command input as it is read.
 SHOW SYMBOL       Displays the value of a symbol.
 SUBROUTINE        Begins a CALL subroutine.
 WAIT              Suspends processing for a specified period of time.

 OPEN              Makes a file available for reading or writing.
 CLOSE             Terminates processing of a file.
 READ              Reads and optionally deletes a record from an open file.
 WRITE             Writes a record to an open file.

 Type ? to display the list of HINTS.
 Type COMMAND_PROCEDURES to redisplay this particular hint.  
 Press the RETURN key before typing a command or topic name.