A nested ordered list
<?xml version="1.0" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>Unordered Lists</title> </head> <body> <p>Here is a nested ordered list:</p> <ol type="I"> <li>Item one</li> <li>Item two</li> <li>Item three</li> <li> <ol type="i"> <li>Item one</li> <li>Item two</li> <li>Item three</li> </ol> </li> <li>Item Four</li> </ol> </body> </html>