Add example
diff --git a/Doc/lib/libcompileall.tex b/Doc/lib/libcompileall.tex
index d39a548..3e9667d 100644
--- a/Doc/lib/libcompileall.tex
+++ b/Doc/lib/libcompileall.tex
@@ -44,6 +44,19 @@
\function{compile_dir()} function.
\end{funcdesc}
+To force a recompile of all the \file{.py} files in the \file{Lib/}
+subdirectory and all its subdirectories:
+
+\begin{verbatim}
+import compileall
+
+compileall.compile_dir('Lib/', force=True)
+
+# Perform same compilation, excluding files in .svn directories.
+import re
+compileall.compile_dir('Lib/', rx=re.compile('/[.]svn'), force=True)
+\end{verbatim}
+
\begin{seealso}
\seemodule[pycompile]{py_compile}{Byte-compile a single source file.}