Who Cites prop to bool?
prop_to_bool	Def P == InjCase(lem(P) ; true; false)
	Thm* P:Prop. (P)
bfalse	Def false == inr()
	Thm* false
btrue	Def true == inl()
	Thm* true

Syntax:

P

has structure:

prop_to_bool(P)

About: IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html