$Array1[0][0] = 10;
$Array1[0][1] = 15;
$Array1[1][0] = 20;
$Array1[1][1] = 30;
....
@Array2 = @Array1;
# Loop through @Array1 and make changes to it. After loop I want to make reference to initial values that were stored in Array1 through use of Array2.