mtext2

W3C sample	WIRIS
	$\text{Theorem 1:},,,\text{/* a comment */}$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mtext>Theorem 1:</mtext>
  <mo>,</mo>
  <mtext> &#x2009;</mtext>
  <mo>,</mo>
  <mtext> &#x205F;&#x200A;</mtext>
  <mo>,</mo>
  <mtext>/* a comment */</mtext>
</math>

Author: Wolfram Research