[lca]: http://linux.conf.au/
[lca-wed]: http://linux.conf.au/programme/schedule/wednesday
[org-tree-slide]: https://github.com/takaxp/org-tree-slide
[lca]: http://linux.conf.au/
[lca-wed]: http://linux.conf.au/programme/schedule/wednesday
[org-tree-slide]: https://github.com/takaxp/org-tree-slide