namespace="MathML"
namespaceURI="http://www.w3.org/1998/Math/MathML"
guardFactoryWith="ENABLE(MATHML)"
attrsNullNamespace

actiontype
alttext
background
close
color
columnspan
definitionURL
denomalign
depth
dir
encoding
fontfamily
fontsize
fontstyle
fontweight
height
linethickness
mathbackground
mathcolor
mathsize
mathvariant
notation
numalign
open
rowspan
selection
separators
src
stretchy
subscriptshift
superscriptshift
width