The term document refers to what is being coded and typed in the text editor. The term page refers to what the browser displays for the viewer or what you see in your browser window when your browser has opened your coded document. Try not to confuse the two terms. Think of the document as what is being coded and saved as a .html file and page refer to the Web page seen by the user from the Web browser window. Notice the forward slash this time in front of the HTML letters.
Many elements have a beginning tag and an ending tag.
Begin a new line. This closes the HEAD section. Do you see how the HEAD element begins and ends inside the shell of the beginning and ending HTML element. Also, the HEAD section is nested between the beginning and ending HTML tags. The HEAD section is opened and closed before you can open the BODY section.