Menus (covered in Creating Menus) can have components that are also choices. These components are groups of items that have an interaction upon selection just like other choices. The
:interaction keyword is used to associate radio or check buttons with the group — with the values
:multiple-selection respectively. By default, a menu component has an interaction of
See Grouping menu items together for more details.
CAPI User Guide and Reference Manual (Macintosh version) - 25 Feb 2015