Using the same .yml technique and options as Page configuration, a folder can be configured using a separate index.yml file placed inside the folder.
Set a custom icon for the folder.
Expand the folder node in the tree navigation with the expanded config.
Move a folder up to the top of the navigation by setting the order. The higher the number, the higher in the stack the folder will be placed.
Move a folder to the bottom of the navigation. The lower the number, the lower in the stack it will be placed.
Change the folder label used for the left navigation tree node label.
label: Custom label
Hide a folder by setting the visibility configuration.
Another option to completely ignore a folder or a file would be to prefix the folder name or file name with an underscore
_. For instance, naming a folder
_guides would instruct Retype to ignore the folder.