diff -r b8be6ac4395d Doc/tutorial/classes.rst
--- a/Doc/tutorial/classes.rst	Wed Mar 07 08:55:52 2012 +0100
+++ b/Doc/tutorial/classes.rst	Thu Mar 08 12:03:20 2012 +0200
@@ -180,7 +180,9 @@
 scope_test()
 print("In global scope:", spam)
 
-The output of the example code is::
+The output of the example code is:
+
+.. code-block:: none
 
 After local assignment: test spam
 After nonlocal assignment: nonlocal spam
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<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://bugs.python.org/file24757/tis-not-code-2.patch">(-&gt;オリジナル)</a>
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<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
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<input type="submit" value="表示" />
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