Who Cites decidable?
decidable	Def Dec(P) == P  P
	Thm* A:Prop. Dec(A)  Prop
not	Def A == A  False
	Thm* A:Prop. (A)  Prop

Syntax:

Dec(P)

has structure:

decidable(P)

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