Introduction
Codenames and Such is an unofficial book that details additional content for Codename Engine, a fangame engine for Friday Night Funkin' with a focus on softcoding, modding, and optimizations. The official wiki can be found here, for most cases.
The engine in question is the successor to a prior one, titled Yoshi Engine. However, that engine is considered outdated. Codename improves upon what Yoshi Engine did by allowing source code mods, using Haxe packages for organization, and being much more friendly in general.
This book details information not present in the current wiki, but is more intended for tips and tricks, as well as providing decisions based on circumstances. It's also meant to be more of a guide.
Warning: While the book is complete, contributions are welcome under the terms described here.