markup block which isn't a valid markup construct (like the
footnotes above) is regarded as a comment (:duref:`ref &lt;comments&gt;`).  For
example::

   .. This is a comment.

You can indent text after a comment start to form multiline comments::

   ..
      This whole indented block
      is a comment.

      Still in the comment.


Source encoding
---------------

Since the easiest way to include special characters like em dashes or copyright
signs in reST is to directly write them as Unicode characters