public function offsetGet($i){
		$j = $i - 1; // becouse we counting lines form 0 not 1.
		if( !isIndex($this->lines,$j) ){
			(new Report('Blueprints/File/CantFindLine'))->stop();
		}
		// Add mark and sort all marks.
			$this->marks[] = $j;
			sort($this->marks);
		return $this->lines[$j];
	}