Days all Version History items are "safe" from pruning

This policy setting allows you to specify a period of time during which OneNote maintains comprehensive version history pages. After the time specified, OneNote maintains more basic version history pages, which uses less storage space. If you enable this policy setting, OneNote maintains comprehensive version history pages for the length of time you specify, and then maintains basic version history pages once the time period expires. If you disable or do not configure this policy setting, OneNote maintains comprehensive version history pages for 2 days, and then maintains basic version history pages once the time period expires.