Split OneNote page to multiple subpages by Heading 1

Sometimes, we need to split an OneNote page.
Gem for OneNote now add a new feature to split current page to subpages by Heading 1.

This is an example:
The follow OneNote page has some Heading 1 paragraphs.

• New Features
• Gem Tab
• Edit Tab
• Object Tab
• Link Tab
• Cooperation Tab
• Table Tools - Gem Tab

Click "Gem for OneNote" 's "Gem" tab -> "Merge" group -> "Split Heading 1" command.
Gem will split the page into pages. 
The "New Features" Heading 1 split as a main page, 
Other Heading 1 

• Gem Tab
• Edit Tab
• Object Tab
• Link Tab
• Cooperation Tab
• Table Tools - Gem Tab

Are split to subpages in current section.