Other qualities applicable to a software product, such as being modular, or readable, are internal factors, perceptible only to computer professionals who have access to the actual software text.

• 其它的可以应用在软件产品中的品质,如模快化或可读的,都是内在因数,只有那些接触到软件程序的计算机专业人士才察觉的到。