. "2018-01-24 Promoted to public" . "and condition" . . "A condition that is valid if all conditions of it are valid. [Allotrope]" . "2020-01-07 Changed definition. [Allotrope]" . . "and" . "An and condition is a collection of conditions that is valid if all condition items of it are valid. [Allotrope]" . "true"^^ .