   defmacro require(module, opts)
 
   @doc """
+  Imports function and macros from other modules.
+
   `import` allows one to easily access functions or macros from
   others modules without using the qualified name.
 

  defmacro alias(module, opts)

  @doc """
  `require` is used to require the presence of external
  modules so macros can be invoked.

  ## Examples


  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:
