-- creates 4-dimensional array with specified ranges (data defaults to 0)
a = array(2, 3, 4, 5)
put a[1][2][3][4]
-- 0
a[1][2][3][4] = 23
put a[1][2][3][4]
-- 23
a[1][2][3][4] = 42
put a[1][2][3][4]
-- 42