# Implementation

Information about the relationships between notes is written in YAML. By default, the "Folders" field contains a list of links to files in which the note is "nested".

The field names can be changed in the settings.

The note that the entry refers to is called the "parent". The one that refers to it is the "child".

<figure><img src="https://664321701-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FV0BinNVwAPrXH9i721Be%2Fuploads%2FaIOX6swHsOLAc28NrrwU%2Fvirt_folder_example.png?alt=media&#x26;token=69363559-3004-4f5c-b239-912854692db6" alt=""><figcaption></figcaption></figure>

Schematically, the same structure can be represented as:

<figure><img src="https://664321701-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FV0BinNVwAPrXH9i721Be%2Fuploads%2FodlB3ROFOBXcx8iRCWQh%2Fvirt_folder_structure.jpg?alt=media&#x26;token=8a0742d2-6194-409e-8d4a-846d178f3d37" alt=""><figcaption></figcaption></figure>
