Class Diagram Example: Element Visibility

/**
* Attribute and operation visility
* UML User Guide p. 123
*
* @opt operations
* @opt attributes
* @opt types
* @opt visibility
* @hidden
*/
class UMLOptions {}

/** @hidden */
class Tool {}

class Toolbar {
        protected Tool currentSelection;
        protected Integer toolCount;
        public void pickItem(Integer i) {}
        public void addTool(Tool t) {}
        public void removeTool(Integer i) {}
        public Tool getTool() {}
        protected void checkOrphans() {}
        private void compact() {}
}