<<< native [ EOver False (EIdentifier "_ baseline _") (EIdentifier "over script") , ESymbol Rel "=" , EOver False (EUnder False (EIdentifier "_ baseline _") (EPhantom (EIdentifier "fail"))) (EIdentifier "over script") ] >>> eqn {_ baseline _} to {over script} = {{_ baseline _} from {hphantom fail}} to {over script}