From The Free On-line Dictionary of Computing (19 January 2023):
RATional Fortran
RATFOR
<language> (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.
(ftp://ftp.wustl.edu/mirrors/Unix-c/languages/ratfor.tar-z).
["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].
(2001-07-31)