public function save( $fileName = false )
	{
		if( !$fileName )
		{
			if( !$this->fileName )
				throw new RuntimeException( 'No TBZ file name for saving given.' );
			$fileName = $this->fileName;
		}
		$this->generateTar();												// Encode processed files into TAR file format
		$f = new FS_File_Arc_Bzip( $fileName );
		$f->writeString( $this->content );
		return true;
	}