American Land Title Association (ALTA) Practice Exam

Supplementary or detail diagrams on a plat or map serve the critical role of providing additional explanations when necessary. These diagrams can clarify complex information that might be difficult to convey through text alone, making the map more user-friendly and comprehensible. By visually illustrating important features or details of the land, such as easements, boundaries, or unique geographical features, these diagrams enhance the overall utility and informational value of the map.

While enhancing aesthetics might be a benefit of including diagrams, their primary function is to convey information effectively. Reducing text volume can be a secondary advantage, as visual representations often communicate concepts more efficiently than lengthy descriptions. Although surveyor's personal notes can be relevant, they are not typically the focus of supplementary diagrams, which are intended for broader public understanding rather than conveying individual surveyor insights.