IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
dec pred imp bool decider exists A:Type, P:(AType).
(x:A. Dec(P(x))) (!{p:(A)| x:A. p(x) P(x) })
By:
Guarding (<type>) UnivCD
THEN
FwdThru:
Thm* (x:T. Dec(E(x))) (f:(T). x:T. f(x) E(x))
on [ x:A. Dec(P(x)) ]