Merged revisions 78717 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r78717 | benjamin.peterson | 2010-03-06 04:13:33 +0100 (Sa, 06 Mär 2010) | 1 line

  settscdump is definitely an implementation detail
........

Doc/library/sys.rst

@@ -834,6 +834,11 @@ always available.
 
    .. versionadded:: 2.4
 
+   .. impl-detail::
+
+      This function is intimately bound to CPython implementation details and
+      thus not likely to be implemented elsewhere.
+
 
 .. data:: stdin
           stdout