That is why they call it a header. It is at the head, or the top of the page of code. The main body of the code. The TAG tells the browser what to do. Each Tag has its own very own function.
TAGS cause the computer to execute a command.
TAGS are not visible in a web page document unless you are viewing the source code. The META TAGS are very important because they tell a search engine how to classify your web page. This is the computer code that tells your browser how to display the web page to you. You have just completed your first Internet programming lesson. You are on the way to a better understanding of computers.