Open Waypoint URL (Right mouse click)
Choose this option to open the URL associated with this waypoint. The database has provision for a URL for each waypoint and this is usually populated when you load a GPX file. However you can update it (Waypoint=>Edit) with any URL you like. If the URL is empty, GSAK will try to display the coordinates in Google Maps (In which case it will only work if you have a live Internet connection.
The shortcut key for this function is the F4 key.