Best Practices
Items are placed to the left of their corresponding label. Complicated legends with
many items necessitate the usage of grouping levels. The two forms of grouping
levels most commonly seen are the categorical group (e.g., all land use colors placed
separately from all stream‑level colors) and the shape‑type group (e.g., all polygon
features placed separately from all line features). Use headings to describe each group
in categorically separated legends, if your organization schema is not immediately