Some definitions of interest.
ma-state	Def State(ds) == x:Idds(x)?Top
Id	Def Id == Atom
	Thm* Id  Type
bor	Def p  q == if p true else q fi
	Thm* p,q:. (p  q)
eqof	Def eqof(d) == 1of(d)
	Thm* T:Type, d:EqDecider(T). eqof(d)  TT
fpf-single	Def x : v == <[x],x.v>
id-deq	Def IdDeq == product-deq(Atom;;AtomDeq;NatDeq)
top	Def Top == Void given Void
	Thm* Top  Type

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