Corrected link to the DAVE-ML exchange test [Jackson04] paper.
Added discrete enumeration selection to
interpolate attribute of
independentVarPts
and
independentVarRef elements at the suggestion of Geoff
Brian, Australian Defence
Science and Technology Organisation
(DSTO).
Added a section and a
variableDef
example on extending the MathML-2
function set with atan2.
Removed all xns attributes from examples.
Emphasized that it is a good practice to provide
variableDefs in sorted sequence.
2010-05-07