(RATFOR) Brian Kernighan's Fortran preprocessor that allows programming with C-like control flow. RATFOR is mainly of historical significance.

A translator from Ratfor to Fortran IV was posted to comp.sources.Unix volume 13.

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["Ratfor - A Preprocessor for a Rational Fortran", B.W. Kernighan, Soft Prac & Exp 5:395-406, Oct 1975].

["Software Tools", B.W. Kernighan & P.J. Plauger, A-W, 1976].