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-rw-r--r--Doc/lib/libstdtypes.tex8
1 files changed, 8 insertions, 0 deletions
diff --git a/Doc/lib/libstdtypes.tex b/Doc/lib/libstdtypes.tex
index 740887d..65e96bf 100644
--- a/Doc/lib/libstdtypes.tex
+++ b/Doc/lib/libstdtypes.tex
@@ -1291,6 +1291,14 @@ Note, the non-operator versions of the \method{update()},
\method{symmetric_difference_update()} methods will accept any iterable
as an argument.
+The design of the set types was based on lessons learned from the
+\module{sets} module.
+
+\begin{seealso}
+ \seemodule[comparison-to-builtin-set]{sets}{Differences between
+ the \module{sets} module and the built-in set types.}
+\end{seealso}
+
\subsection{Mapping Types --- class{dict} \label{typesmapping}}
\obindex{mapping}