void maple(MathData const &, MapleStream &);
void maxima(MathData const &, MaximaStream &);
void mathematica(MathData const &, MathematicaStream &);
-void mathmlize(MathData const &, MathStream &);
+docstring mathmlize(MathData const &, MathStream &);
void octave(MathData const &, OctaveStream &);
bool extractNumber(MathData const & ar, int & i);