Map is the heart of the web app. It can be dragged and zoomed to desired location. Map extent is usually limited to selected locale.
Fig. 2.1. Map view with app options on the left side. From top to bottom: gazetteer module, geolocation, increase/decrease zoom, link to documentation, logout, admin panel for accounts with admin rights.
All actions performed on the map will be tracked by the page URL where map view and all current settings will be stored as parameters. These will be also initially set if passed in the loaded URL.
Fig. 2.2. URL with app settings stored as query parameters.