Example of how to use the Class TThread and all of the threading tools available with Free Pascal.
This exemplifies the most basic use of a thread.
It declares an event to hook into the main form.
This is a single shot use because we set the thread's FreeOnTerminate property to True.
The example above isn't of much use if we just run a single instance.
In this example we create multiple instances of the same thread and we start them concurrently.
This is, also, a single shot use because we set the thread's FreeOnTerminate property to True.