IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
iter via intseg shift rw1 1. A : Type
2. f : AAA 3. u : A a,b:, e:({a..b}A), k:.
(Iter(f;u) i:{a..b}. e(i)) = (Iter(f;u) j:{a+k..b+k}. e(j-k))