diff --git a/dragonscale.html b/dragonscale.html
index 7d1dbe90f302e018a6786b0ec3836b34ec7f607b..346cee52da56cda0e6810cb7037c5aa668bf0b08 100644
--- a/dragonscale.html
+++ b/dragonscale.html
@@ -4,7 +4,8 @@
<!-- Tests performance of multiple, potentially active, OpenSeadragons.
No sample data due to immaterial rights, sorry.
Adjust "scale_tiles" and "6448" and "9101" to your own tile data.
- To get a lot of data, duplicate the same tiles by hard-linking.
+ To get a lot of data, duplicate the same tiles by hard-linking:
+ for D in `seq 0 199`; do cp -R -l scale_tiles scale_tiles_$D ; done
-->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />