As we go through this training, there are a few concepts about web accessibility we will try to address in context. Many of the concerns about page structure are handled by the CFAES template. However, as you construct your document it is very important to understand headline structure, and why is important for accessibility. I like to use Wikipedia to illustrate this concept because of the table of contents that they generate for every article you can see in the article about The Ohio State University, that the contents break down each section and subsection of the article by the headlines above it. This is done dynamically using the heading levels within the document. Every page starts with a Heading 1 or an "H1" and that is the title of the page. Many if not most pages can stop there, a single heading and some text. However, if your page has multiple sections and headings, it is very important to maintain this outline as you create your document. Now you're not likely to, and probably should not, make an explicit table of contents like Wikipedia does on your page. However Wikipedia doesn't make this either, this table of contents is generated automatically for this page by the heading levels throughout their document. A primary subsection is labeled with a heading 2 or an "H2", and then a subsection of that is labeled with an "H3" and then an "H4" for a subsection of that and so on. Very similar to what you see on Wikipedia, assistive software such as screen readers will dynamically create an interface for your user that will step through the sections of your page using the heading levels to create a logical structure that users can follow. This allows them to understand the document structure as well as browse through the document to find the section of information they need. As we get into editing pages on our sites you should keep the structure in mind and make sure that your pages are structured accordingly. Don't choose your headings based on the font or appearance of these headings, always choose them based on maintaining the structure of your pages for users browsing with alternative devices.