PEP 3114: rename .next() to .__next__() and add next() builtin.
diff --git a/Doc/lib/libexcs.tex b/Doc/lib/libexcs.tex
index 02e99a7..d119ed9 100644
--- a/Doc/lib/libexcs.tex
+++ b/Doc/lib/libexcs.tex
@@ -265,8 +265,8 @@
 \end{excdesc}
 
 \begin{excdesc}{StopIteration}
-  Raised by an iterator's \method{next()} method to signal that there
-  are no further values.
+  Raised by builtin \function{next()} and an iterator's \method{__next__()}
+  method to signal that there are no further values.
   This is derived from \exception{Exception} rather than
   \exception{StandardError}, since this is not considered an error in
   its normal application.