"Add Folder" option in Administration

Hi,

I'm new to Grav universe, and following the documentation I am getting into it.

I understand how pages works, but I have a question about an option when creating a page through the Administration :

In the "Manage pages" section, the "+ Add" menu has 3 sections :

• Add Page
• Add Folder
• Add Modular

My concern is about the "Add Folder", what is the utility of that option ?

The 2 others create specific types of page, but the folder just do a folder, that update to a page if you edit and save it in the Administration...