IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
prime divs mul via intseg1a2 1. p :
2. prime(p)
3. a :
4. k:, b:.
4. b-a = k 4.
4. (e:({a..b}). a<bp | ( i:{a..b}. e(i)) (i:{a..b}. p | e(i)))
b:, e:({a..b}).
a<bp | ( i:{a..b}. e(i)) (i:{a..b}. p | e(i))