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  Description
 
    The Randomize procedure sets RandSeed (defined in the System
    unit) to an unpredictable value taken from the system time.
    RandSeed holds a starting value for the Random function, a
    pseudorandom-number generator.
 
    Random takes a starting value from RandSeed and produces a
    sequence of numbers. If RandSeed is not set to a starting value
    either by Randomize or by assignment, Random generates a
    predictable sequence based on RandSeed's initial value of 0.