L1Ext_do
n - Permute the top n stack elements as specified by a literal permutation tuple. For example, if A, B, and C have been pushed, in that order, a permute tuple of <2, 3, 1> indicates the stack should have A in the 2nd slot, B in the 3rd, and C in the 1st. It has the same effect as having pushed C, and A, and B, in that order.