The Record Boundary ID is a foreign key which points to a record in the Record Boundary entity, where information about the Record Boundary can be found. The Direction Value is the quantity of a direction of a boundary.
Direction is the angle between a line and an arbitrary chosen reference line.
When the reference line is north or south and the angle is designated east or west, the direction is called the bearing. When the reference line is north or south and the angle is measured clockwise, the direction is called azimuth. Distance is the linear measure along a line.