Added \label{} for logical addressing.
diff --git a/Doc/lib/libundoc.tex b/Doc/lib/libundoc.tex
index 8a6f0d9..fcb2c05 100644
--- a/Doc/lib/libundoc.tex
+++ b/Doc/lib/libundoc.tex
@@ -1,4 +1,5 @@
 \chapter{Undocumented Modules}
+\label{undoc}
 
 Here's a quick listing of modules that are currently undocumented, but
 that should be documented.  Feel free to contribute documentation for