The Layer/Legend List button toggles
between the layer listing and the map legend. The default is to display the Layer
List.
The Layer List allows you
to select, which map layers are visible and which layer is active at any given
time. If under the visible column the square box is unchecked, then that
particular layer will not be displayed with the other map features and
therefore can not be used as an active layer.
Another facet of this
button is the active layer function; this is required for feature selection and
identification. The Active layer must be selected prior to utilizing the
functionality of the Identify, Query, Find, Buffer, Select by Rectangle and
Select by Line/Polygon push button tools. The active Layer is selected
by clicking on the round box adjacent to one of the listed layers. Only one map layer can be active at any given time. When making any modifications to the Layer List,
click the Refresh Map button to redraw the updated map. The
layer list may change as you zoom in and out.
The Legend List shows the
symbols associated with each of the map layers.