What type of marking is identified as "black points"?

The term "black points" specifically refers to distinct black markings that appear on the mane, tail, and legs of certain horse breeds or individuals. This identification highlights the contrast between these darker areas and the horse's body coat color, often seen in breeds like the bay or certain variations of chestnut horses. These black points are a breed characteristic and can help in determining the identification and classification of the horse.

The other options do not accurately define what "black points" refers to in equine terminology, as they pertain to different types of markings or descriptions not associated with the traditional definition of black points. For example, a specific white marking on the face pertains to markings on the head, not to the black coloring in the mane, tail, or legs. Similarly, a pattern of black spots on the body refers to a different type of coat pattern entirely, and the term "dark-coated horses" is too broad and does not specifically denote the markings in question.