A more thorough explanation:

An evidencing feature is a group of circumstances that, when taken together, form a composite feature that can be reliably associated with a single object. This term is used more frequently in criminal cases than in civil cases. In criminal cases, it usually refers to evidence that establishes a perpetrator's identity, while in civil cases, it often refers to evidence that an event did or did not occur. It is also known as an evidencing mark or evidential mark.

One example of an evidencing feature in a criminal case could be a fingerprint found at the scene of a crime that matches the suspect's fingerprint. This composite feature of the fingerprint can reliably associate the suspect with the crime.

In a civil case, an evidencing feature could be a surveillance video that shows an employee stealing from their employer. The video provides evidence that the theft occurred and can be reliably associated with the employee.

These examples illustrate how a group of circumstances can form a composite feature that provides evidence in a legal case. The evidencing feature can be used to establish identity or to prove that an event did or did not occur.