A folder is a page whose only job is to hold other pages. It has no editor — opening one shows the list of its children instead of a text surface.
A folder is the same kind of page as your documents, sheets, and chats — one row in the drive's page tree, with a parent and a list of children. What makes it a folder is that it has no body: instead of rendering an editor, a folder renders the list of pages that sit under it. Any page type can be a child of a folder, and folders nest inside folders up to 100 levels deep — past that, the tree refuses the move.
Sibling order is stored per-parent. Dragging a page up or down in the sidebar moves it between its neighbours, and the sidebar tree honours that drag order from then on. The folder's own list view ignores it: it sorts by title by default, and the sort by title / type / updated / created controls switch the column it sorts on. Sort is per-view and not remembered across sessions.
Dropping files onto a folder creates a File page per file under that folder, in the order you dropped them. Classification, text extraction, and OCR happen in the background, as described in Files & Uploads. You can keep working — the tree shows each new child as soon as it's stored.
Permissions on a folder apply to the folder page itself. Granting someone view or edit on a folder does not walk down to its children — each page checks its own grants plus drive membership. See Sharing & Permissions for the full resolution rules.
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