Formula input
<!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"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title></title> <style type="text/css" media="Screen"> * .nowrap { white-space: nowrap; } * .preserved { white-space: pre; } </style> </head> <body> <p><code class="nowrap preserved">a = x(y<sup>2</sup> + z<sup>3</sup>) + 1</code>. </body> </html>