Fix for SF bug #947894: calendar.weekheader() undocumented
diff --git a/Doc/lib/libcalendar.tex b/Doc/lib/libcalendar.tex
index f97e60e..8a00280 100644
--- a/Doc/lib/libcalendar.tex
+++ b/Doc/lib/libcalendar.tex
@@ -59,6 +59,11 @@
(\code{1}--\code{31}).
\end{funcdesc}
+\begin{funcdesc}{weekheader}{n}
+Return a header containing abbreviated weekday names. \var{n} specifies
+the width in characters for one weekday.
+\end{funcdesc}
+
\begin{funcdesc}{monthrange}{year, month}
Returns weekday of first day of the month and number of days in month,
for the specified \var{year} and \var{month}.