Legend Info

There is a Legend Info page for each map, which may be accessed from the
chapter page or the individual map page. It contains detailed information
about the symbols and data on the map. These include:

Units: Area units and Data units used on the map
Legend Description: Symbols and classification used on the map
Layers: Layers available under LAYER CONTROLS, and what they do
Active Tools: Which Map Toolbar tools are active, and what they do
Table Fields: Description of data fields which are associated with map features.
  A link to Data files available in spreadsheet format is below the descriptions.
Map Tips: Suggestions related to specific data or tools for this map
Legend Notes: Notes specific to the data or symbolization on this map,
  relevant to interpreting the map or understanding the data on the map.