code/__DEFINES/_spacemandmm.dm

SHOULD_BE_PURE	A "pure" proc does not make any external changes, or to its output.
PRIVATE_PROC	Private procs can only be called by things of exactly the same type. This also prevents overriding of the proc.
PROTECTED_PROC	Protected procs can only be call by things of the same type or subtypes
VAR_FINAL	Final vars forbid overriding their value by types that inherit it.
VAR_PRIVATE	Private vars can only be called by things of exactly the same type
VAR_PROTECTED	Protected vars can only be call by things of the same type or subtypes

Define Details

Private procs can only be called by things of exactly the same type. This also prevents overriding of the proc.

Protected procs can only be call by things of the same type or subtypes

A "pure" proc does not make any external changes, or to its output.

Final vars forbid overriding their value by types that inherit it.

Private vars can only be called by things of exactly the same type

Protected vars can only be call by things of the same type or subtypes