A markdown link (13 passages, no note) written in a note (note: Note) points to a file that does not exist in its source (note: Source). The link (note: Link) is not recorded and the reader (note: Reader) lands on nothing.
Check (note: Check) E-LINK-BROKEN, severity (note: Severity) error (29 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).