IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
fpf-all-single-decl1 A:Type{i'}, eq:EqDecider(A), B:(AType{i'}), P:(x:AB(x)Prop{i}), x:A,
v:B(x). ydom(x : v). w=x : v(y) P(y,w) P(x,v)
By:
UnivCD THEN Unfold `fpf-all` 0 THEN Unfolds [`fpf-dom`;`fpf-single`;`fpf-ap`] 0
THEN
Reduce 0