Added \indexsubitem definition; functions were previously indexed for the
wrong module.
diff --git a/Doc/lib/libquopri.tex b/Doc/lib/libquopri.tex
index 2fbd35a..a7395ec 100644
--- a/Doc/lib/libquopri.tex
+++ b/Doc/lib/libquopri.tex
@@ -12,6 +12,8 @@
 \indexii{RFC}{1521}
 \index{MIME!quoted-printable encoding}
 
+\renewcommand{\indexsubitem}{(in module quopri)}
+
 \begin{funcdesc}{decode}{input\, output}
 Decode the contents of the \var{input} file and write the resulting
 decoded binary data to the \var{output} file.