**********************************************************************
*                              IF                                    *
**********************************************************************
*                  COPYRIGHT 1983 EUGENE H. MALLORY                  *
**********************************************************************
PROGRAM:
   IF - used in batch command files along with ENDIF.
USAGE:
    IF exp
	.
	.
	.
    ENDIF

FUNCTION:
    This allows conditional execution of commands in BATCH or SUBMIT
    files.
    
    Allowed expressions are:
	
	    IF EXISTS fid
	    IF NOTEXISTS fid
	    IF string EQUAL string
	    IF string NOTEQUAL string

    Null strings are allowed.
    
    EXIT may be used to stop batch file execution.
    
	    IF $# EQUAL 3
	    COMMAND 1
	    COMMAND 2
	    EXIT
	    ENDIF
	    IF $# EQUAL 2
	    COMMAND 3
	    COMMAND 4
	    EXIT
	    ENDIF
	    

SEE ALSO:
    BATCH        
