• only the layer marked "active" in the list will be accessible to/selectable by the tools in the toolbar
• only layers marked "visible" in the list will be shown in the map area
• you must refresh the map to see layers newly made "visible" using the layer list

• If necessary, click on the legend/layer tool icon to make the list of layers visible.
• Click the "visible" option next to the layer that you wish to view.
• Click on the "refresh map" button below the layer list to redraw the map.
• The selected layer will now be visible on the map.

How to make a layer active:

• If necessary, click on the legend/layer tool icon to make the list of layers visible.
• Click the "active" option next to the layer that you wish to query.
• Click the "visible" option if not already selected (remember to refresh the map).
• The selected layer will now be active on the map.