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Semantics of Content Elements

<!-- reference to OpenMath definition of Bessel function -->
<apply>
  <csymbol encoding="OpenMath" 
    definitionURL="http://www.openmath.org/cd/BesselFunctions.ocd">
    <msub><mi>J</mi><mn>0</mn></msub>
  </csymbol>
  <ci>y</ci>
</apply>

Ivan Herman, Head of Offices05.06.200225 (31)