Fortran 77 coding conventions
Michael Metcalf · ACM SIGPLAN Fortran Forum · 1983
In this note we follow the scheme of Vapne [Ref. 1], classifying each point according to its position in the language and its relevance, either to portability or to programming style. Points marked with two asterisks should be regarded as mandatory for readable, portable code, one asterisk indicates that the point is important, and unmarked points are to be considered only as desirable.