A PointsTo is one element of the result of a 'pointsto' query on an expression. It describes a single pointer: its type and the set of "labels" it points to.

If the pointer is of interface type, it will have one PTS entry describing each concrete type that it may contain. For each concrete type that is a pointer, the PTS entry describes the labels it may point to. The same is true for reflect.Values, except the dynamic types needn't be concrete.