>In the late 80s, there was an idea floated that every file could have a sister file with comments, such that they would not need to be parsed/discarded by a pa

>In the late 80s, there was an idea floated that every file could have a sister file with comments, such that they would not need to be parsed/discarded by a parser. This would aid in generating documentation, among other tooling. This sounds a lot like the director's commentary tracks on DVDs. No one ever watched those, and the sister-comment-file would flop the same way if anyone really tried it. A separate file is fine for documenting overall design, but for detailing sections of code, the commentary needs to be close to it, where people will see it.