ostream & SaveTo(ostream & save);
istream & LoadFrom(istream & load);
friend ostream & operator << (ostream & save, StdMeshers_Quadrangle_2D & hyp);
ostream & SaveTo(ostream & save);
istream & LoadFrom(istream & load);
friend ostream & operator << (ostream & save, StdMeshers_Quadrangle_2D & hyp);