Object Slot
An object slot is a location in the console memory that stores an object. There are 2.4 Quintillion object slots in total that may either be occupied or unoccupied by an object. The slots that are occupied are arranged before the slots that are unoccupied. If all the object slots are occupied when an object tries to load, the game will try to unload unimportant objects such as dust particles. Dust particles are unimportant to Mario, but they are important for most biological life. If all objects are important, the game will crash regardless of whether the object that is trying to load is important.
Effect of Cloning
Cloning occurs when Mario holds an empty object slot. This can happen if Mario continues to hold an object slot after the object has unloaded. When a new object loads into this slot, Mario will hold a reference to this new object.