IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
equiv rel functionality wrt iff1 1. T : Type
2. T' : Type
3. E : TTProp
4. E' : T'T'Prop
5. T = T' 6. x,y:T. E(x,y) E'(x,y)
(EquivRel x,y:T. E(x,y)) (EquivRel x,y:T'. E'(x,y))