construct uml add dialog uml list cell render modelel repres name choic list select list param choic list contain choic user param preselect list contain preselect choic param titl titl dialog param multiselect allow user select multipl choic param exclus choic select list appear choic list preselect choic remov choic list uml add dialog list choic list preselect titl multiselect allow exclus choic preselect titl uml list cell render multiselect allow exclus 