Select Aircraft Variation

In the Slect Aircraft box of FS9, there is a section called Variation which contains one or several textures. One could select any of the textures.
In FSX however, I failed to see any Variation section. If it is not included in the software, what is the purpose of having several textures in many of the default aircraft. For example: the b747 has about four or five.
Another question:
In an aircraft folder in FSX which included several textures labeled. texture
texture.1
texture.2
texture.3, etc.
Does each texture correspond to a specific [fltsim.#]?
Is the default texture - "texture" or is it whatever is in [fltsim.0]?
Bubblehead
In FSX however, I failed to see any Variation section. If it is not included in the software, what is the purpose of having several textures in many of the default aircraft. For example: the b747 has about four or five.
Another question:
In an aircraft folder in FSX which included several textures labeled. texture
texture.1
texture.2
texture.3, etc.
Does each texture correspond to a specific [fltsim.#]?
Is the default texture - "texture" or is it whatever is in [fltsim.0]?
Bubblehead