diff --git a/img/zptr.gif b/img/zptr.gif
new file mode 100644
index 0000000..9c4bd38
Binary files /dev/null and b/img/zptr.gif differ
diff --git a/index.html b/index.html
index c22c834..855478f 100644
--- a/index.html
+++ b/index.html
@@ -490,6 +490,7 @@
+