   defmacro bc(args)
 
   @doc """
+  Internal special form for block expressions.
+
   This is the special form used whenever we have a block
   of expressions in Elixir. This special form is private
   and should not be invoked directly:

  defmacro __block__(args)

  @doc """
  Captures a call as an anonymous function.

  The most common format to capture a function is via module,
  name and arity:


  @doc """
  Returns the current file name as a binary.

  Although the file can be accessed in the `__ENV__`, this macro
  is a convenient shortcut.
  """
