In this tutorial: http://railstutorial.org/chapters/filling-in-the-layout#top
There is \"header\"
I know that in HTML there is \"head\"
But, what is
Chapter 3 of Dive into HTML5 by Mark Pilgrim does an excellent job going into the details of when and why to use the new is one of several new tags in HTML5 that are supposed to replace instead.
element.