OtherFormulaArc
Another FormulaArc, with unknown arc name but with a known formula-related arcrole.
Another FormulaArc, with unknown arc name but with a known formula-related arcrole.
trait FormulaArc
trait XLinkArc
trait ChildXLink
trait XLinkElem
trait AnyTaxonomyElem
class Object
trait Matchable
class Any