As the name of this pen suggests, this is a multi-level Bootstrap menu example made by Sunil. In this example, you can see a list of menu items. When you keep your mouse over ‘More options’, another level of menus comes up. The interesting thing is that you don’t have to click on ‘More options’ in order to open the other menus, you just need to put your mouse cursor over it and a list of new menu items will appear. Then on the second list of items, when you hover your mouse over ‘More’, another level of menu items opens up. In this way, the user can go to the next level of menus.
You can extend this template up to many levels or you can also eliminate some levels if you want. So for example, you can have as many as 10 levels of menus or just 2 levels.