Some terminology
Save format terminology
Global applies to every object and spawnIds in some contexts.
Specific applies to a specific spawnIds in some contexts.
Illegals refers to items that cannot be obtained through the game, and you must use save editors or hacks to do so.
Saves refer to PC Simulator save files.
Source code terminology
Namespaces (or packages) (represented by this icon 
) are like Java packages.
Classes (represented by this icon 
) are sort of like Java classes.
Events (represented by this icon 
) call other classes when something happens.
Members (or properties) (represented by this icon 
) are sort of like variables, but with getters and setters built into them.
Operators (represented by this icon 
) are like operators to cast class into a class.
Fields (or variables) (represented by this icon 
) are like variables.
Methods (or voids) (represented by this icon 
) are like voids in Java.
A struct (represented by this icon 
) is like a struct in C++.
Private refers to anything in its class that can only be accessed by itself.
Public refers to anything that can be used by other classes.