IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
permute by flips221 1. k : 2. 0<k 3. p:((k-1)(k-1)).
3. Bij((k-1); (k-1); p) (L:(k-1-1) List. p = compose_flips(L))
4. p : kk 5. Bij(k; k; p)
6. x : k 7. p(x) = k-1
8. Bij(k; k; p o (k-1, x))
L:(k-1) List. p = compose_flips(L)