Admin

Set-up and mange special page settings

Adminjpg

Useful for 'super admin' or more experienced users especially during site set up or a reorganising exercise.

Internal name

This can have a functional use so change with caution!

Prevent this page from being deleted

Does just as it says. Useful for preventing mishaps with site editors

Add page button behaviour

These settings are useful in ensuring that behaviour is consistent in site sections and can help limited the creation of pages in the wrong parts of the website.