Documents
Documents are pieces of related content in a Collection. They’re similar to Pages, except they belong to a collection rather than the site itself.
Options
Visibility
By default, documents are visible. You can change this by switching it to hidden.
Date
The timestamp associated with the document.
Permalink
The permalink changes the path the document is accessible at on your site.
Layout
Choose which layout you’d like to use. Any layout you have in _layouts will be listed here.