NOTES:

Using Rand_Seed, it is possible to obtain a series of numbers with randomness aspect but in such a way that it is always the same one, so that it is important if you want that the game shows a predictable behavior. For example, some games allow to save "demos" of games simply storing the pulsations of key that the player is doing during a normal game,and reproducing soon making them use of the same game of functions used during the normal game. For a game that uses this technique, the use of the function Rand can cause that some small behavior varies during the reproduction of demo of unpredictable form, making the reproduction non-viable of demo.