an mglyph stretched horizontally or vertically.
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <mi> <mglyph width="1" height="1" src="nist.png" alt="NIST"/> </mi> <mo>+</mo> <mi> <mglyph width="2" height="1" src="nist.png" alt="wide stretched image of NIST"/> </mi> <mo>+</mo> <mi> <mglyph width="1" height="2" src="nist.png" alt="tall stretched image of NIST"/> </mi> </math>
Author: Bruce Miller