anchor.diff:  }
   -------------------------------
   
  -Here is the 'all_tests.c' test runner...
  +Here is the +all_tests.c+ test runner...
   
   [source,c]
   -------------------------------
  
positive.code: suites of test cases can be included in the 'main()' runner file.
  This makes it less work to add more tests.
  
  Here is the, so far empty, test case in 'words_test.c'...
  
  [source,c]
  -------------------------------
  
negative.code: }
  -----------------------------
  
  A test is denoted by the macro *Ensure*. You can think of a test as
  having a 'void (void)' signature. You add the test to your suite using
  'add_test()'.
  
  On compiling and running, we now get the output...
  