<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC
    "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
    "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">
<html xmlns:svg='http://www.w3.org/2000/svg' xml:lang='en' xmlns='http://www.w3.org/1999/xhtml'>
<head><meta content='application/xhtml+xml;charset=utf-8' http-equiv='Content-type' /><title></title></head>
<body>
<h2 id='header1'>Header with attributes</h2>

<h3 id='header2'>Header with attributes</h3>

<h3 id='header_no_attributes'>Header no attributes</h3>

<p id='par1'>Paragraph with a.</p>

<p id='par2'>Paragraph with <em class='chello'>emphasis</em></p>
</body></html>