| Definitions | if b then t else f fi , tt, ff, Rpre-ds(x1), t  T, Rpre?(x1),  b, P   Q,  x:A. B(x), False, Unit, es_realizer{i:l}, Rrframe(loc; x; L), Rbframe(loc; k; L), Raframe(loc; k; L), Rpre(loc; ds; a; p; P), Rsends(ds; knd; T; l; dt; g), Reffect(loc; ds; knd; T; x; f), Rsframe(lnk; tag; L), Rframe(loc; T; x; L), Rinit(loc; T; x; v), Rplus(left; right), prop{i:l}, Rnone,  |