Stupid question about EntityParentNode()

[Psychophanta]

From manual:

EntityParentNode()

Syntax

Result = EntityParentNode(#Entity)
Description

Returns the parent NodeID().
Parameters

#Entity The entity to use.

Return value

Returns the parent NodeID(), if any. This can be either a real node, or a bone if the entity is attached to a bone. If the entity has no parent node, it will returns 0.

However, just after creating any Entity, it never returns 0, even no parent node is attached.
Can explain please?

[Comtois]

it's done internally. For an entity to be visible it must be attached to a scene node.