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+.TH RATFOR 1
+.SH NAME
+ratfor \- rational Fortran dialect
+.SH SYNOPSIS
+.B ratfor
+[
+.I option ...
+]
+[
+.I filename ...
+]
+.SH DESCRIPTION
+.I Ratfor
+converts a rational dialect of Fortran into ordinary irrational Fortran.
+.I Ratfor
+provides control flow constructs essentially identical to those in C:
+.TP
+statement grouping:
+.nf
+{ statement; statement; statement }
+.TP
+decision-making:
+if (condition) statement [ else statement ]
+.br
+switch (integer value) {
+ case integer: statement
+ ...
+ [ default: ] statement
+}
+.TP
+loops:
+while (condition) statement
+for (expression; condition; expression) statement
+do limits statement
+repeat statement [ until (condition) ]
+break
+next
+.LP
+and some syntactic sugar to make programs easier to read and write:
+.TP
+free form input:
+multiple statements/line; automatic continuation
+.TP
+comments:
+# this is a comment
+.TP
+translation of relationals:
+>, >=, etc., become .GT., .GE., etc.
+.TP
+return (expression)
+returns expression to caller from function
+.TP
+define:
+define name replacement
+.TP
+include:
+include filename
+.PP
+.fi
+.I Ratfor
+is best used with
+.IR f77 (1).
+.SH "SEE ALSO"
+.IR efl (1),
+.IR f77 (1),
+.IR struct (1)
+.br
+B. W. Kernighan and P. J. Plauger,
+.IR "Software Tools" ,
+Addison-Wesley, 1976.