Also, if you implement cascading menus, be sure to allow for a wide threshold in mouse movement, so the submenu doesn't disappear.
However, cascading menus are not entirely without worth.
This mechanism, called a cascading menu (see Figure 22-4), presents some serious issues for ease of use.
First of all, cascading menus are to be avoided at all costs.
They are called cascading menus, and although they are occasionally useful, more often they merely tempt the weaker souls in the development community to gum up their menus for little gain.
It should be clear that cascading menus should only be employed in sophisticated sovereign applications for rarely used functions or as a secondary command vector for something more directly provided in the interface.
