       end
 
   To run the test above, all you need to do is to run the file
-  using elixir from command line. Assuming you named your file
-  assertion_test.exs, you can run it as:
+  using `elixir` from the command line. Assuming you named your file
+  `assertion_test.exs`, you can run it as:
 
       bin/elixir assertion_test.exs
 

  end

  @doc """
  Starts up ExUnit and automatically set it up to run
  tests at the VM exit. It accepts a set of options to
  configure `ExUnit` (the same ones accepted by `configure/1`).

  In case you want to run tests manually, skip calling this
  function and rely on `configure/1` and `run/0` instead.
  """
  def start(options // []) do

  * `:max_cases` - Maximum number of cases to run in parallel.
                   Defaults to `:erlang.system_info(:schedulers_online)`;

  * `:trace` - Set ExUnit into trace mode, this sets `:max_cases` to 1
               and prints each test case and test while running;

  """
