diff --git a/Doc/lib/libundoc.tex b/Doc/lib/libundoc.tex
index 4551a00..a531331 100644
--- a/Doc/lib/libundoc.tex
+++ b/Doc/lib/libundoc.tex
@@ -22,6 +22,11 @@
 
 \item[SimpleHTTPServer.py]
 --- Simple HTTP Server
+
+\item[test]
+--- Regression testing framework.  This is used for the Python
+regression test, but is useful for other Python libraries as well.
+This is a package rather than a module.
 \end{description}