Welcome to the appendix; the land of misshapen and forgotten documentation. Ok, not really forgotten just... 'lesser' sounds wrong. Some of this material could get some loving and be promoted to a full chapter, some are always going to be an appendix, some might be worthy of a short book unto itself. Right now though it lives here, have a look through. You'll find a lexicon of standard Pony terminology, a symbol lookup cheat sheet that can help you locate documentation on all our funny symbols like ^, ! and much more.