A note (note: Note) sits under no folder a declared domain (note: Domain) claims, matches (note: Occurrence) no domain glob (21 passages, no note) and declares none in frontmatter (note: Frontmatter). It lands in the unclassified domain. A domain claims a folder with folder: true, the folder named after its identifier (note: Identifier), or folder: <name>, anywhere on the path of a note in any source (note: Source); a subdomain declared by folder claims only the notes under its parent (6 passages, no note)'s folder, or anywhere on a path the parent's globs match when the parent is declared by globs. Folders and globs combine, the deepest domain winning, then the last declared.
Check (note: Check) W-DOMAIN-UNCLASSIFIED, severity (note: Severity) info (8 passages, no note) by default, documented with a before and after example in the check pages. The severity can be overridden per project (note: Project) or per repository (note: Knowledge repository).