<!doctype html>
<html>
<head>
  <title>Semantics</title>
</head>

<body>
  <p>presentation MathML (no annotations): <math><mrow><mtext>presentation MathML</mtext></mrow></math></p>
  <p>content MathML (no annotations): <math><maction actiontype="toggle"><csymbol>content MathML</csymbol></maction></math></p>
  <p>presentation MathML ; annotation: <math><mrow><mtext>presentation MathML</mtext></mrow></math></p>
  <p>presentation MathML ; annotation-xml: <math><mrow><mtext>presentation MathML</mtext></mrow></math></p>
  <p>content MathML ; annotation: <math><mrow><mtext>annotation</mtext></mrow></math></p>
  <p>content MathML ; annotation-xml: <math><mrow><mrow><mtext>annotation-xml</mtext></mrow></mrow></math></p>
</body>
</html>