Embedding MathML with JEuclid.

I have been working with very recent SVN/CVS versions of FOP, Batik
and JEuclid.  I have embedded a small fragment of MathML in an XSL-FO
document (actually output from Docbook source by xsltproc):

<fo:instream-foreign-object>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"
overflow="scroll">
          <mml:mrow>
            <mml:mo>∑</mml:mo>
            <mml:mn>4</mml:mn>
            <mml:mo>+</mml:mo>
            <mml:mi>x</mml:mi>
          </mml:mrow>
        </mml:math>
</fo:instream-foreign-object>

I needed two patches to the examples/mathml directory to get this to
work:

First, the constructor for MathBase and DOMMathBuilder have changed in
recent JEuclid (fop-svn-jeuclid-svn.patch).

Secondly, the scaling of the image is completely wrong, because of the
extreme complexity of the dimension handling.  I have found great
difficulty
in understanding this because of the levels of nesting, the interaction
of
JEuclid, Batik and FOP, and the fact that attributes such as height and
width
are copied so frequently from one object to another.  Width and height