| Definitions |  x:A. B(x), P   Q,  A,  b, [[R]], if b t else f fi, Rnone?(x1), true , false, t  T, SQType(T), {T}, Prop, False,  x. t(x), A B, P & Q, A || B, P  Q, @i: A, P Q,  T, True, t ...$L, A ||+ B, ma-frame-compatible(A;B), Realizer, A || B, Y, P  Q, Unit, x(s),  ,  , , left  right, @loc x initially v:T, @loc only events in L change x:T, only events in L send on lnk with tag, @loc effect knd(v:T) x := f State(ds) v , sends knd(v:T) on l:tagged(g,State(ds),v):dt, @loc precondition for a(v:T):P State(ds) v, @loc: k writes only members of L, @loc: k sends only on links in L, @loc: only members of L read x, Dsys |