Level 0 menu layer is always the main menu layer. Level 1 and above are sub menu layers. Level 0 menu layer is the main menu layer. Level 1 menu layer is the sub menu layer that appears when the cursor is over a sub menu item that is found in a Level 0 menu layer. Level 2 menu layer is the sub menu layer that appears when the cursor is over a sub menu item that is found in a Level 1 menu layer.
Description Create the menu layer where menu items can be inserted later.
You are free to give any name to the menu layer. However, the name must be unique, i.e. another menu layer must not have the same name as any of the previous menu layer. Integer specifying the width of the menu layer you wish to create. Integer specifying the level of the menu layer. The main menu layer must always have a level of 0.