badAttribsVal3
Dave Doyle, Design Science
Handling of unknown attribute values.
ErrorHandling/BadAttribs
../../ErrorHandling/BadAttribs/badAttribsGlyph4
../../ErrorHandling/BadChildren/badBvar1
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mn mathbackground="quagmire">2 </mn>
<mo color="potato">+ </mo>
<mn>5</mn>
</math>