Stores the datatips data structure in the polyline entity.
ok=datatipSetStruct(curve_handle,datatips_struct)
:curve_handle A handle on a polyline. : :datatips_struct A tlist of type datatips. : :ok A boolean flag set to %f if the operations fail. :
datatipSetStruct stores the datatips data structure in the polyline entity. This is a subsidiary functions which is not to be called directly.