Another one of the unwritten coding guidelines is that comments in code and other places should be limited to some fixed width. Depending on who asks you, the request will either be for 79 characters or 80 characters as that's the standard console width. The other reasoning is because we use Github which limits their page width to 800px, which makes someone have to scroll to read long sections of text.
Since this has been requested multiple times in various pull requests, the width requirement should reach some consensus and be added to the coding guidelines. It should also state when and where this should be used (i.e. only in README type files, if indented .php comments need to be 79 - 4x#tabs chars wide, etc...). Naderman has also suggested adapting the PSR-2 guidelines about this: https://github.com/php-fig/fig-standard ... d#23-lines