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diff --git a/lib/fastcwd.pl b/lib/fastcwd.pl
index 6b452e8..ecd87c8 100644
--- a/lib/fastcwd.pl
+++ b/lib/fastcwd.pl
@@ -1,5 +1,13 @@
 # By John Bazik
 #
+# This library is no longer being maintained, and is included for backward
+# compatibility with Perl 4 programs which may require it.
+#
+# In particular, this should not be used as an example of modern Perl
+# programming techniques.
+#
+# Suggested alternative: Cwd
+#
 # Usage: $cwd = &fastcwd;
 #
 # This is a faster version of getcwd.  It's also more dangerous because