Correct small nits reported by Rob Hooft.
diff --git a/Doc/lib/libzlib.tex b/Doc/lib/libzlib.tex
index 28365ae..7d2cac9 100644
--- a/Doc/lib/libzlib.tex
+++ b/Doc/lib/libzlib.tex
@@ -1,3 +1,5 @@
+% XXX The module has been extended (by Jeremy) but this documentation hasn't been updated yet
+
\section{Built-in Module \sectcode{zlib}}
\label{module-zlib}
\bimodindex{zlib}
@@ -6,7 +8,7 @@
module allow compression and decompression, using the zlib library,
which is based on GNU zip. The zlib library has its own home page at
\code{http://www.cdrom.com/pub/infozip/zlib/}.
-Version 1.0.4 is the most recent version as of April 30, 1997; use a
+Version 1.0.4 is the most recent version as of December, 1997; use a
later version if one is available.
The available functions in this module are: