A file that serves as a reminder and is arranged to bring matters to timely attention; can be manual (e.g., folders into which copies of property records are placed when an item is temporarily signed out to the laboratory, court, investigation, etc.), or can be automated as part of a computer application that sets a reminder date that triggers a notification that an action is overdue (e.g., an item has not been returned from court). (The Biological Evidence Preservation Handbook, 2013)