The /onetrip qualifier allows you to specify "one-trip"
DO loops. Many pre-Fortran 77 compilers implemented DO loops that
would always have at least one iteration, even if the initial value
of the loop control variable were higher than the final value. This
qualifier informs KAP that the program being processed contains
loops that need the one-trip feature.
Executing kfort and explicitly calling the compiler
qualifier /nof77 will cause KAP to be called with the
/onetrip command qualifier.