LET Free_Syntax

###
LET Free_Syntax

            The  LET  command may be omitted if no option is present, and if the
        SIC syntax is set to FREE. In this case, the = sign  is  mandatory.   In
        FIXED syntax, the LET command is compulsory, but the = sign optional. In
        FREE syntax, commands lines like
               A[I,J] = SIN((2*I+J)/PI)
        where A is a known variable, are recognized as assignement and automati-
        cally expanded to the equivalent FIXED syntax
               LET A[I,J] SIN((2*I+J)/PI)
        In  case   of  conflict between a variable name and a (complete) command
        name, an error message is issued. Free syntax cannot  be  used  for  the
        LET /WHERE  command. Command SIC SYNTAX [Free|Fixed] can be used to tog-
        gle between Fixed and Free syntax if needed.