message: Doc review : Add explanation when to use Alpha or Cech.
diff: @@ -57,8 +57,12 @@ namespace alpha_complex {
  * href="http://doc.cgal.org/latest/Kernel_d/index.html#Chapter_dD_Geometry_Kernel">dD Geometry Kernel</a>
  * \cite cgal:s-gkd-15b from CGAL as template parameter.
  *
  - * \remark When the simplicial complex is constructed with an infinite value of alpha, the complex is a Delaunay
  + * \remark
  + * - When the simplicial complex is constructed with an infinite value of alpha, the complex is a Delaunay
  * complex.
  + * - For people only interested in the topology of the \ref alpha_complex (for instance persistence),
  + * \ref alpha_complex is equivalent to the \ref cech_complex and much smaller if you do not bound the radii.
  + * \ref cech_complex can still make sense in higher dimension precisely because you can bound the radii.
  *
  * \section pointsexample Example from points
  *
  