using Adobe Photoshop CS2 from http://en.wikipedia.org/wiki/Image:Rugby_union_scrummage.jpg to show gain line. Released under GNU Free Documentation License...
license: according to: Image:Football iu 1996.jpg Image:Rugby union scrummage.jpg Image:Gateshead vs limoux.jpg is GFDL --Shizhao 08:11, 18 December 2006...
https://www.flickr.com/photos/internetarchivebookimages/14566807667/ operator: Flickr URL: https://live.staticflickr.com/2905/14566807667_86849b3b23_o.jpg...
_(14566807667).jpg){kind=link}