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-rw-r--r--Doc/lib/libuserdict.tex7
1 files changed, 5 insertions, 2 deletions
diff --git a/Doc/lib/libuserdict.tex b/Doc/lib/libuserdict.tex
index ce86ad2..8e47360 100644
--- a/Doc/lib/libuserdict.tex
+++ b/Doc/lib/libuserdict.tex
@@ -12,10 +12,13 @@ can add new behaviours to dictionaries.
The \module{UserDict} module defines the \class{UserDict} class:
-\begin{classdesc}{UserDict}{}
+\begin{classdesc}{UserDict}{\optional{intialdata}}
Return a class instance that simulates a dictionary. The instance's
contents are kept in a regular dictionary, which is accessible via the
-\member{data} attribute of \class{UserDict} instances.
+\member{data} attribute of \class{UserDict} instances. If
+\var{initialdata} is provided, \member{data} is initialized with its
+contents; note that a reference to \var{initialdata} will not be kept,
+allowing it be used used for other purposes.
\end{classdesc}
In addition to supporting the methods and operations of mappings (see