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At:
possible-world wf1 1. D : Dsys
2. w : World
3. i,x:Id. vartype(i;x) r M(i).ds(x)
4. i:Id, a:Action(i). isnull(a) (valtype(i;a) r M(i).da(kind(a)))
5. l:IdLnk, tg:Id. (w.M(l,tg)) r M(source(l)).da(rcv(l; tg))
6. i,x:Id. M(i).init(x,s(i;0).x)
7. i : Id
8. t : 9. isnull(a(i;t))
10. l : IdLnk
withlnk(l;m(i;t))
(tg:Idif source(l) = i M(i).da(rcv(l; tg)) else Top fi) List
11. m(i;t) = m(i;t) {m:Msg(w.M)| source(mlnk(m)) = i } List
12. {m:Msg(w.M)| source(mlnk(m)) = i } List
13. {m:Msg(w.M)| source(mlnk(m)) = i } List
14. u : {m:Msg(w.M)| source(mlnk(m)) = i }
u Msg
11. withlnk(l;m(i;t)) = withlnk(l;m(i;t)) (t:Idw.M(l,t)) List
12. (t:Idw.M(l,t)) List
13. (t:Idw.M(l,t)) List
14. t:Idw.M(l,t)
15. t1 : Id
(w.M(l,t1)) if source(l) = i M(i).da(rcv(l; t1)) else Top fi
3 steps
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IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html