The documentation for Effect Managers is basically "If you don't already know how to make one, you shouldn't be making one." I get that it's an "expert feature"

The documentation for Effect Managers is basically "If you don't already know how to make one, you shouldn't be making one." I get that it's an "expert feature", but I want to learn and try anyways! I've been learning the basics by looking at the WebSocket library, and reading the compiler errors when I broke it in different ways. The compilers errors were surprisingly helpful, but some documentation would be nice.