Apple Help in 2015

Oh, and if you think you’re going to be able to double-click a help book to preview it, think again. That won’t work. Instead, you need either to use it from within your application, or you can put it in ~/Library/Documentation/Help (you might have to make that folder) and double-click it in there. Why? Because help files are indexed and you can only open them if they’re registered in the index.

Building help files sounds like a real mess.