Add msilib documentation.
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 6172f36..541ad56 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -446,6 +446,7 @@
 \input{libsunaudio}
 
 \input{windows}                 % MS Windows ONLY
+\input{libmsilib}
 \input{libmsvcrt}
 \input{libwinreg}
 \input{libwinsound}