What does the term "marginal information" refer to on a map?

The term "marginal information" on a map refers to the key details that are typically found along the edges of the map. This information often includes essential elements such as the map's title, legend, scale, source data, and other notes that help the user understand the map's context and how to interpret the symbols and features represented.

This marginal information is crucial for effective navigation and understanding of the map, as it provides necessary supporting details that enhance the usability of the map. Understanding this aspect ensures that users can interpret the data accurately and apply it in real-world scenarios, such as planning routes or understanding terrain features.

In contrast, other choices do not accurately capture the definition of marginal information as it relates to maps, focusing instead on unrelated concepts or incorrect contexts.