IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
iter via intseg split mid122 1. A : Type
2. f : AAA 3. u : A 4. is_ident(A; f; u)
5. is_assoc_sep(A; f)
6. a :
7. c :
8. a = c 9. a<c 9.
9. (k:, b:.
9. (b-c = k 9. (
9. ((e:({a..b}A).
9. (((Iter(f;u) i:{a..b}. e(i))
9. ((=
9. ((f((Iter(f;u) i:{a..c}. e(i)),Iter(f;u) i:{c..b}. e(i))))
b:, e:({a..b}A).
ac