checkpoint
diff --git a/unix/README b/unix/README
index 0cba0f4..602ee26 100644
--- a/unix/README
+++ b/unix/README
@@ -1,2 +1,5 @@
 This software was packaged for Unix by Russ Cox.
 Please send comments to rsc@swtch.com.
+
+http://swtch.com/plan9port/unix
+