What's written on that web pages is clear enough for me and it's the same as my own understanding of personal data. It is rather abstract and I can admit that i

What's written on that web pages is clear enough for me and it's the same as my own understanding of personal data. It is rather abstract and I can admit that it may be not easy to understand for others without some good examples. But it's a complicated topic in general, that has to be studied beyond reading a single article or text of EU law.