#### This page strives to clear up and explain some terms you often come across when using Model Engine.

### Model Blueprint
This term refers to the imported models cached within Model Engine after server boot
or running the `/meg reload models` command. As the name suggest, this is only the blueprint,
and not the [model itself](#active-model).

### Modeled Entity
This term is used to describe an entity which has the capability of displaying models.
A modeled entity doesn't necessarily have a model, and can have multiple [active models](#active-model)
at once.

### Active Model
An active model is the actual model that is being applied to a [modeled entity](#modeled-entity), 
animated, and displayed in the world. It's structured can be altered at runtime, and does not affect
the [model blueprint](#model-blueprint) when modified. 

### Bone
A bone represents the movable part of an [active model](#active-model).
It also rarely refers to the default bone configuration stored within a [model blueprint](#model-blueprint),
which should not be modified.

### State
An animation that is being supplied from a [model blueprint](#model-blueprint) to a [active model](#active-model),
and configured with different attributes such as speed, transition-in time, and transition-out time.

### CullType

CullType specifies the action performed to cull a model in order to reduce network load.  
Here is a list of actions, from least to most reduction.

| Type          | Description                                                                                              |
|---------------|----------------------------------------------------------------------------------------------------------|
| NO_CULL       | Does not cull the model. Which means the modeled entity moves like normal                                |
| MOVEMENT_ONLY | Stop all animation updates and only update the modeled entity's position, outside of some specific bones |
| CULLED        | Completely despawn the modeled entity from view outside of some specific bones                           |