If an app has this effect, I can't even imagine what an OS manual would feel like in these days.
I wish I could provide a proper manual but I can barely keep up with updating the app website with the rate of change in technologies. A major OS upgrade would need an army of writers to update manual on time.
Not that I wouldn't love it. It would be tremendously useful to have a PDF where I can Cmd-F obscure tidbits which I often need in building MacOS apps.
I just think it's impractical given the complexity of software in this age.