Is the OneNote subpage only 3 levels? Can more levels be achieved?
OneNote's page has only 3 layers. Can more levels be achieved?
Like Windows Explorer folders, there are unlimited levels to facilitate note management.
OneNote just supports only 2-tier subpages.
If you want to support infinite levels, you need to use Section Groups.
OneNote's section group is a folder in Windows. You can have unlimited levels.