anchor.diff:  IMPORTANT: We strongly recommend the use of BDD Style notation with
   constraints based assertions.
   
  -A Runner
  -~~~~~~~~
  -
  -The tests are only run through running a test suite in some form. We
  -can create and run one especially for this test like so... (But see
  -also <<runner>>.)
  +
  +=== A Runner
  +
  +The tests are only run by running a test suite in some form. (But see
  +also <<runner>>.) We can create and run one especially for this test like
  +so... 
   
   [source,c]
   -----------------------------
  
positive.code: form for asserting boolean expressions (`assert_that(0 == 1);`).
  
  [[tdd_with_cgreen]]
  Five Minutes Doing TDD with Cgreen
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  For a more realistic example we need something to test. We'll pretend
  that we are writing a function to split the words of a sentence in
  
negative.code: 
  
  [[runner-options]]
  === Cgreen Runner Options
  
  Once you get the build set up right for the cgreen-runner everything
  is fairly straight-forward. But you have a few options:
  