trivial rewording in footnote 5.
diff --git a/Doc/lib/libstdtypes.tex b/Doc/lib/libstdtypes.tex
index 0fb1b8a..f913f41 100644
--- a/Doc/lib/libstdtypes.tex
+++ b/Doc/lib/libstdtypes.tex
@@ -856,8 +856,8 @@
\item[(5)] The \method{sort()} and \method{reverse()} methods modify the
list in place for economy of space when sorting or reversing a large
- list. They don't return the sorted or reversed list to remind you
- of this side effect.
+ list. To remind you that they operate by side effect, they don't return
+ the sorted or reversed list.
\item[(6)] The \method{sort()} method takes an optional argument
specifying a comparison function of two arguments (list items) which