public function sameLine( $string = "", $sleep = 0 ){
		$string		= Alg_Text_Trimmer::trimCentric( $string, 78 );									//  trim string to <80 columns
		$spaces		= max( 0, strlen( $this->lastLine ) - strlen( $string ) );
		$this->lastLine	= $string;
		$fill		= str_repeat( " ", $spaces );
		print( "\r" . $string . $fill );
		if( $sleep )
			sleep( $sleep );
	}