Does myScript.enable = true call the function Start() ?

[Qwertyyy]

Does the function Start() is called when the component (my script) is created or when it is enabled ?

[Dantus]

This might help:

Unity - Manual: Order of execution for event functions

It is a very useful overview in my opinion.

[Qwertyyy]

@Dantus

This might help:
http://docs.unity3d.com/Manual/ExecutionOrder.html

It is a very useful overview in my opinion.

Start: Start is called before the first frame update only if the script instance is enabled.

Thanks for your fast and complete answer.