title: App.config and ConfigurationManager
body: <p>If I call the OpenMappedExeConfiguration() method and specify a config file (filemap) as a parameter, does this mean that the ConfigurationManager will use the newly specified config file from that point onwards and ignore app.config?</p>
  
  <p>I know that ConfigurationManager looks for app.config by default, but because the OpenMappedExeConfiguration() method returns a Configuration object, its almost as if the instance returned is the only applicable to the config file specified, but I'm not 100% sure.</p>