...use FORTRAN-77 features; you do realize that nobody had thought of those features yet and, for those features that were comptemplated, there wasn't enough CPU power, memory nor disk^Wcard storage to implement it. That could backfire if the author had to work under a deadline. Some of the non-standard features used were pre-cursors of stuff which was adopted in a ...

... II, you can't use FORTRAN-77 features; you do realize that nobody had thought of those features yet and, for those features that were comptemplated, there wasn't enough CPU power, memory nor disk^Wcard storage to implement it. That could backfire if the author had to work under a deadline. Some of the non-standard features used were pre-cursors of stuff which was adopted in a ...