anchor.diff:  chooses the correct implementation for you! This is a first example of a
   __container free numerical algorithm__.
   
  +=== Using FELTOR on Windows
  +FELTOR has been developed mostly on Linux machines. Since recently, it has also
  +become possible to develop on https://www.visualstudio.com/[Microsoft Visual Studio].
  +We have not yet investigated how to compile and run FELTOR's own programs on Windows,
  +but it is possible to use it as a library.
  +____
  +Unfortunately, the msvc compiler only supports an outdated OpenMP version so
  +consider a performance penalty of approximately factor 2, when running the OpenMP backend on Windows.
  +____
  +
  +
  +For the download of the library and its dependencies from github you may want
  +to consider a software solution like for example https://desktop.github.com
  +The include paths need to be set in the project properties.
  +Please also enable the use of intrinsic functions, the AVX2 instruction set and
  +activate Open MP support.
  +____
  +It is important to set the Platform to x64!
  +____
  +
  +
  +
   == 2. Further reading
   
  -Please check out our https://github.com/feltor-dev/feltor/wiki[wiki
  +Please check out our https://feltor-dev.github.io/wiki[wiki
   pages] for some general information, user oriented documentation and
   Troubleshooting. Moreover, we maintain tex files in every src folder for
   technical documentation, which can be compiled using pdflatex with
  
positive.code: 
  ____
  If you do not like this, you can also create your own config file as
  discribed link:config/README.md[here].
  ____
  
  Now let us compile the first benchmark program.
  
negative.code: 
  ____
  Our code only depends on external libraries that are themselves openly
  available.
  ____
  
  === Using FELTOR's code projects
  