Blackboard definitions

Looking for example at AllBlackboardDefinitions whether on cyberdoc or directly on RED4ext.SDK can lead to question its size and memory management, and generally speaking how it works when using:

@addField(PlayerStateMachineDef)
public let AnotherBoardDefinition: BlackboardID_Uint;

but also when inheriting, e.g. from existing classes.

All credits to psiberx on Discord:

And the previous discussion: