Some definitions of interest.
ma-sub	Def M1  M2 Def == 1of(M1)  1of(M2) & 1of(2of(M1))  1of(2of(M2)) Def == & 1of(2of(2of(M1)))  1of(2of(2of(M2))) Def == & & 1of(2of(2of(2of(M1))))  1of(2of(2of(2of(M2)))) Def == & & 1of(2of(2of(2of(2of(M1)))))  1of(2of(2of(2of(2of(M2))))) Def == & & 1of(2of(2of(2of(2of(2of(M1))))))  1of(2of(2of(2of(2of(2of(M2)))))) Def == & & 1of(2of(2of(2of(2of(2of(2of(M1)))))))  1of(2of(2of(2of(2of(2of(2of( Def == & & 1of(2of(2of(2of(2of(2of(2of(M1)))))))  1of(M2))))))) Def == & & 1of(2of(2of(2of(2of(2of(2of(2of( Def == & & 1of(M1))))))))  1of(2of(2of(2of(2of(2of(2of(2of(M2))))))))
msga	Def MsgA Def == ds:x:Id fp-> Type Def == da:a:Knd fp-> Type Def == x:Id fp-> ds(x)?Voida:Id fp-> State(ds)ma-valtype(da; locl(a))Prop Def == kx:KndId fp-> State(ds)ma-valtype(da; 1of(kx))ds(2of(kx))?Void Def == kl:KndIdLnk fp-> (tg:Id Def == kl:KndIdLnk fp-> (State(ds)ma-valtype(da; 1of(kl)) Def == kl:KndIdLnk fp-> ((da(rcv(2of(kl); tg))?Void List)) List Def == x:Id fp-> Knd Listltg:IdLnkId fp-> Knd ListTop
	Thm* MsgA  Type{i'}
assert	Def b == if b True else False fi
	Thm* b:. b  Prop
iff	Def P  Q == (P  Q) & (P  Q)
	Thm* A,B:Prop. (A  B)  Prop
ma-empty	Def  == mk-ma(; ; ; ; ; ; ; )
ma-is-empty	Def ma-is-empty(M) Def == fpf-is-empty(1of(M))fpf-is-empty(1of(2of(M))) Def == fpf-is-empty(1of(2of(2of(M))))fpf-is-empty(1of(2of(2of(2of(M))))) Def == fpf-is-empty(1of(2of(2of(2of(2of(M)))))) Def == fpf-is-empty(1of(2of(2of(2of(2of(2of(M))))))) Def == fpf-is-empty(1of(2of(2of(2of(2of(2of(2of(M)))))))) Def == fpf-is-empty(1of(2of(2of(2of(2of(2of(2of(2of(M)))))))))

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