OpenLayers. Control. Permalink

{String}

{OpenLayers.Projection} Requires proj4js support.  Projection used when creating the coordinates in the link.  This will reproject the map coordinates into display coordinates.  If you are using this functionality, the permalink which is last added to the map will determine the coordinate type which is read from the URL, which means you should not add permalinks with different displayProjections to the same map.