The Bookmark widget stores a collection of map view extents (that is, spatial bookmarks) displayed in the viewer. It also allows you to create and add your spatial bookmarks after the viewer is launched. In addition, if there are any existing bookmarks defined in the map (that were set in the map viewer in ArcGIS Online or Portal), you can use them in the viewer optionally.
Use the Bookmark widget
1. Click the widget to display predefined bookmarks.
2. Click one of the bookmark thumbnails to set the map extent to the bookmark area.
3. Add additional bookmarks by zooming to your desired location and clicking the plus sign.
4. To delete a bookmark, click on it and then click delete at the bottom on the panel. Preconfigured bookmarks cannot be removed.
5. Click the close button in the window to close the widget.
