Metadata should describe or provide specific information about individual web documents. Metadata is commonly used to list keywords so that search engines can conduct a more accurate and refined search. It can also include: content ratings, author information, site maps, stream channel definitions, a document's primary language, and digital library collections.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <html lang="en"> <head> </head> <body> </body> </html>
W3C WAI: http://www.w3.org/WAI//
HTML Techniques for WAI 1.0: http://www.w3.org/TR/WCAG10-HTML-TECHS/