Philosophical thinking about styles and templates, or "Where the iceberg basis is hidden?"

Reading articles about working in LibreOffice on various websites, including blogs, I always meet with the lack of understanding, which makes these articles fit only for a basic use. However, for the office, and for people who often use LibreOffice and not want to think about how entry should be shown, but only what they are writing, the concept of styles and templates is very important. This article is not a lesson of use, but an attempt to give the rod, frame, idea, around which it will be possible to strengthen your knowledge. And I hope that it will help you to bring together existing and easier to accept new ones.