13.0.8 `poly_initial_coefficients'
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poly_initial_coefficients(I)
     :  It computes the coefficients of the initial ideal of I with
     respect to the given order.

poly_initial_coefficients(I | ORDER=key0,V=key1)
     : This function allows optional variables   ORDER, V

   Description:

     The optional variable v is a list of variables. The order is
     specified by the  optional variable order


   Example:
      poly_initial_coefficients([x^2+y^2-4,x*y-1]|order=0,v=[x,y]);

