I keep noticing major functionality completely missing from the official documentation, for example App::subRequest. Maybe the documentation on the website should include phpdoc info to fill in the holes in documentation? Slim 3 is nice to use but it's extremely frustrating dealing with incomplete documentation. I just spent an hour figuring out how to make sub requests, something that is very powerful and likely a need other users share. This is not the first time I've spent too much time trying to figure out something basic that should be documented, and as such I think this constitutes a major documentation bug. Because Slim is a lightweight framework, it should be very well documented such that it can be learned quickly. It really shouldn't require a ton of experience using the framework to learn how to use it, that sort of requirement makes more sense for a huge framework that sucks you into its idiosyncratic lexicon and universe.