| separator-menu-item% : class? | ||
superclass: object%  | ||
  | 
A separator is an unselectable line in a menu. Its parent must be a
 menu% or popup-menu%.
| (new separator-menu-item% [parent parent]) | 
| → (is-a?/c separator-menu-item%) | 
| parent : (or/c (is-a?/c menu%) (is-a?/c popup-menu%)) | 
Creates a new separator in the menu.