# File ValidForm.rb, line 672
        def initialize(*params)
                VALIDATION_KEYS.merge!({:minchosen=>1,:maxchosen=>1})
                super
                VALIDATION_KEYS.delete(:minchosen); VALIDATION_KEYS.delete(:maxchosen)
                @chooseMultiple = false
                @allowCustom = false
                allowed_container_classes(ValidForm::Option)
                #ToDo: allow FieldSet for <optgroup>s in HTML
        end