Multidimensional hyper

[Luke Palmer]

What is the resulting data structure in each of the following:

    -<< [1, 2]
    -<< [[1,2], [3,4]]
    -<< [[1,2], 3]
    [[1,2], 3] >>+<< [[4,5], 6]
    [1, 2, [3]] >>+<< [[4,5], 6]

Luke