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    control the syntax for mathematic operations. In FIXED syntax,  the  LET
    command is compulsory. 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)
    Free syntax cannot be used for the LET /WHERE command. See  HELP SYNTAX\
    for details.

Gildas manager 2014-07-01