Who Cites w-after?
w-after	Def (x after e) == s(1of(e);2of(e)+1).x
w-s	Def s(i;t).x == 1of(2of(2of(2of(w))))(i,t,x)
pi2	Def 2of(t) == t.2
	Thm* A:Type, B:(AType), p:(a:AB(a)). 2of(p)  B(1of(p))
pi1	Def 1of(t) == t.1
	Thm* A:Type, B:(AType), p:(a:AB(a)). 1of(p)  A

Syntax:

(x after e)

has structure:

w-after(w; x; e)

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