anchor.diff:  option to the command line:
   
   ....
  -baryonyx-0.2 file.lp
  -....
  -
  -The baryonyx solver have many parameters. Some parameters are global, some specific for the optimization algorithms.
  +baryonyx-0.3 -o file.lp
  +....
  +
  +To run baryonyx into the heuristic model (ie. trying to valid all
  +constraints and optimize the solution), add a `-o` or `--optimize`
  +option to the command line:
  +
  +....
  +baryonyx-0.3 -o file.lp
  +....
  +
  +The Baryonyx solver have many parameters. Some parameters are global,
  +some specific for the optimization algorithms.
   
   .Table Command line global parameters
   [cols="1,1,5a", options="header"]
  
positive.code: === Requirements
  
  * `cmake` (≥ 3)
  * c++ compiler with c++14 support (`gcc` ≥ 5, `clang` ≥ 3.5)
  
  For recent Debian GNU/Linux and Ubuntu derivatives (remove clang to only use
  gcc):
  
  [source,bash]
  ....
  apt-get install build-essential cmake clang
  ....
  
  === Recommended
  
  * `nlopt` library - optimization library to automatic parametrization of
    Baryonyx solver.
  
  === First installation
  
  
negative.code: parameter and override the `CXXFLAGS` as follow:
  
  ....
  export CXX=g++-8
  export CXXFLAGS='-Wall -Wextra -Werror -ftree-vectorize -mmmx -msse -msse2 -msse3 -O3'
  cmake -DCMAKE_INSTALL_PREFIX=$HOME/usr ..
  ....
  
  The CMake script provide parameters to control debug, log facility and
  optimization.
  
  .Table CMake Command line parameters (cmake -DWITH_LOG=OFF ...)
  [cols="1,1,5a", options="header"]
  |===
  |name| default| summary
  
  | WITH_LOG
  | ON
  | Enable log message on standard output.
  
  | WITH_DEBUG
  | ON
  | Enable maximum debug function and add more log message. Be careful, this mode slow down computation.
  
  | WITH_FULL_OPTIMIZATION
  | OFF
  | Enable optimal computation but remove some control on float and control.
  |===
  
  === Update installation
  
  First, we need to update the Git repository with the following
  commands:
  
  ....
  cd baryonyx
  