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[IND.HLP.2] 

	New features in Version 2 are indicated by change bars (:) in the
left-hand margin.

		For further explanation, see HLP:IND.MEM.

 Lines starting with ";" are messages for user, lines starting with "." are
IND directives, lines starting with ".;" are comments. All others are routed
to TOPS20.

	Summary of directives, special symbols, enable/disable keywords.
	==================================================================

Label definition:
 .label:                Assigns a name to a line in the command file so that the
                line may be referenced.
Symbol definition:
 .ASK           Defines or redefines a logical symbol by asking the user  a  Y/N
                question and assigns the logical symbol a true or false value.
 .ASKN          Defines or redefines a numeric  symbol  by  asking  the  user  a
                question and assigns a numeric value to the symbol.
 .ASKS          Defines or redefines a  string  symbol  by  asking  the  user  a
                question  and  assigns  the  symbol a value which is a string of
                text.
 .ASKF          Defines or redefines a file symbol by promptig the  user  for  a
                filename and associates the symbol with that filename.
 .SETT/.SETF    Defines or redefines a logical symbol and assigns the  symbol  a
                true or false value.
 .SETN          Defines or redefines a numeric symbol and assigns the  symbol  a
                numeric value.
 .SETS          Defines or redefines a string symbol and assigns  the  symbol  a
                character string value.
| .LOGICAL,.STRING, .NUMERIC, .FILE Declares a symbol list of the appropriate
|		type, initializing all symbols to default values.
File access:
 .DATA          Specifies a single line of data to be sent to an output file.
 .CLOSE         Closes an output data file.
 .OPEN          Opens an output data file (creates a new version if necessary).
 .OPENA         Opens an existing output data file and appends data to it.
| .OPENI	Opens a data file for input
| .READ		Reads a line from the currently open input data file to a string
|		variable.
| .REWIND	Rewinds the current input data file.
| .CLOSEI	Closes the current input data file.
Logical control:
 .CALL          Invokes another IND file, keeping all symbols defined.
 .GOSUB         Branches to a label identifying a subroutine within the  command
                file.
 .GOTO          Branches to a label within a command file.
 .RETURN                Effects an exit from a subroutine - returns  control  to
                the line following the .GOSUB that called it.
 .RUN           Runs a program, but allows input for the program  to  come  from
                the terminal rather than the command file.
 .STOP          Terminates the current command file.
| .LOGFILE	Defines and opens a terminal logfile.
| .ENDLOG	Closes the current terminal logfile.
Logical tests:
 .IF            Determines whether or not a string or numeric  symbol  satisfies
                one of a number of possible conditions.
 .IFDF/.IFNDF   Determines whether or not a symbol is defined.
 .IFT/.IFF      Determines whether a logical symbol is true or false.
 .TEST          Tests the length of a string symbol.
 .TESTFILE      Tests to see if a file exists.  Enable/disable operating mode:
 .DISABLE/.ENABLE       Turns on or off the following parameters:  Substitution,
                command   echoing,  data  mode,  extended  EXEC,  trace,  CTRL/Z
|                recognition, command startup file execution, logfile writing,
|		ability of lower fork to logout job.
Loop control:
 .INC           Increments the value of a numeric symbol.
 .DEC           Decrements the value of a numeric symbol.
Execution control:
 .DELAY         Delays further execution for the specified number of seconds.
 .PAUSE         Stops the indirect command file temporarily, allowing  the  user
                to enter commands to TOPS20.

		Special symbols
		---------------
Symbol name     Type                    Value
___________     ____                    ______
<STRLEN>        Numeric         Length of last string symbol in .TEST directive,
                                or entered in response to .ASKS.
<SYSTEM>        String          Name of system  as  printed  when  a  CTRL/C  is
                                struck to login, eg 
                                Installation test system,TOPS20 Monitor 4(3417).
<DATE>          String          Current date in form 25-Dec-81.
<TIME>          String          Current time in form 13:00:00
<USER>          String          User name of current job, eg T-BENN
<DIRECTORY>     String          Currently connected directory, with structure,eg
                                PS:<K-LIVINGSTONE>
<FILESTAT>      Numeric         Result of last .TESTFILE directive.
<EOF>		Logical		Status of input data file - true if at end.

		ENABLE/DISABLE keyword defaults
		-------------------------------
        DATA - disabled
        EXTENDED-EXEC - disabled
        ESCAPE - disabled
        CONTROL-Z-EXITS - enabled
        TRACE - disabled
        SUBSTITUTION - Enabled 
	QUIET - Disabled
	COMAND-CMD - enabled
	LOGGING - disabled
	LOGOUT - disabled