  The fact that mean field theory is appropriate to describe an Ising model
with long-range interactions has been already shown by Cannas and Tamarit.
Although not explicited in our Letter, we have used periodic boundary
conditions in all our simulations, such that the maximum possible distance
between two lattice sites is L/2.
  We make no specific comments about the validity (or lack of validity) of
Boltzmann-Gibbs statistical mechanics to describe long-range systems. Our paper
does nothing but to compare the scaling functions derived from Boltzman-Gibbs
statistics from those derived from the use of Tsallis entropy.
