| eqds(sys, sources(cl, d), sys0), observe(nam, d), usedName(nam) ⊦ contents(run(sys, cl), nam) = contents(run(sys0, cl), nam) |
⊦ eqds(sys, sources(cl, d), sys0) → eqd(run(sys, cl), d, run(sys0, cl))
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (sys, cl, d, sys0)]]