There is also many mistakes in your text: Where, in 1.1, your web page has “The user is pleased and there exists harmony in the world.”, my book (7th edition) has “The user is pleased and there is harmony in the world.” In 1.2, my book has “Each language expresses the yin and yang of software.”, but your text capitalizes: “Yin and Yang”. In the following paragraph, your text writes “COBOL”, but my book has “Cobol”. There are many more (including missing words, wrong words, etc.), but I don’t want to write them all here.
Buy the book.
i suggest you fix the errors in your copy of the page and post the url here
30 year old thing does thing that was common 30 years ago.
You know the book uses outdated terminology and probably doesn't use colour.