Figure 2. The proposed zigzag approach to a cascading menu hierarchy, where each subsequent submenu layer is displayed in the opposite direction of its parent. The arrow shows the navigation required to reach the target item, “IE 3.0”, located in the fourth layer of the menu hierarchy

From

A Zigzag Approach to Cascading Menus

Duane Yoder, Raihan Uddin Ahmed, Munsi Barkatullah, A. S. M Mahmudul Hasan

Journal of Computer Sciences and Applications. 2015, 3(4), 94-99 doi:10.12691/jcsa-3-4-2