The new subpages are related to the mind map.
The Mind map for OneNote V8 is newly added, using the selected text to create a subpage of the Mind map page. At the same time, the new subpage has a backlink which help to jump back to the Mind map page.
- At first, select a topic or a subtopic in OneNote Mind Map.
- Right click on the topic, click "Subpage by Selection" on the context menu.
(Or click "Axis" tab -> "Page and Its Links" group -> "Subpage by Selection" menu item)
Mind Map for OneNote add-in will create a OneNote page follow the Mind Map page. And The title of the subpage is the selected text.
Also, the upper-right corner of the subpage has a "Parent Page" backlink that jumps back to the Mind map page. It facilitate rapid jump back to the mind map.
At the same time, the original selected text, will be added a link which jump to the new subpage. The links facilitate quickly jump to each other between these two OneNote pages.