MathML 3 - section 4.6 "The Strict Content MathML Transformation"

Hi all,

Section 4.6 includes the following text under point 4b:

"Rewrite interval, vectors, matrices, and matrix rows as described in 
Section 4.4.1.1 Interval |<interval>| 
<http://www.w3.org/TR/MathML/chapter4.html#contm.interval>, 
Section 4.4.9.1 Vector |<vector>| 
<http://www.w3.org/TR/MathML/chapter4.html#contm.vector>, 
Section 4.4.9.2 Matrix |<matrix>| 
<http://www.w3.org/TR/MathML/chapter4.html#contm.matrix> and 
Section 4.4.9.3 Matrix row |<matrixrow>| 
<http://www.w3.org/TR/MathML/chapter4.html#contm.matrixrow>".

However, sections 4.4.9.1, 4.4.9.2, and 4.4.9.3 do not describe any 
rules on how to rewrite vector, matrix, and matrixrow elements.

Given that vectors (and matrices, and matrixrows) can have domain 
qualifiers, I presume that there is supposed to be a transformation like 
the one for sets, although it is not clear what OpenMath the following 
is supposed to map into:
<vector>
<bvar><ci>x</ci></bvar>
<domainofapplication><set><cn>1</cn><cn>2</cn><cn>3</cn></set></domainofapplication>
<apply><plus/>
<ci>x</ci>
<cn>1</cn>
</apply>
</vector>

The OpenMath linalg7 CD has a list_to_vector symbol, but it is a binary 
function that requires the ring of the vector to be specified explicitly.