la.children track by formula.id" ng-if="$index == 0" ng-include="'formula-renderer.html'"></span>
        </span>
        <span ng-switch-when="Loop">
            {<span ng-repeat="formula in ::formula.children track by formula.id" ng-include="'formula-renderer.html'"></span>}*
        </span>
        <span ng-switch-when="Sequence">
            <span ng-repeat="formula in ::formula.children track by formula.id" ng-if="$index == 0" ng-include="'formula-renderer.html'"></span>
            ;
            <span