What is described by lines having different styles, such as dashed lines, on a map?

The correct choice is pattern, as it refers to the visual representation of various types of line styles on a map to convey different meanings or categories. In cartography, patterns can include various attributes such as solid, dashed, dotted, or other line styles that each indicate specific information. For example, dashed lines may represent boundaries or trails, while solid lines might represent roads or borders.

The use of pattern is crucial for effective map design, as it helps users to interpret the map quickly and accurately. Unique line styles enhance the map's functionality by providing visual cues about the data presented.

Hue refers to the color aspect of a visual representation, which does not necessarily pertain to the style of lines. Shape relates to the outlines or forms of features on the map, and typography deals with the design and arrangement of text. None of these concepts directly addresses the idea of line styles, making pattern the appropriate choice.