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+.. _Puppet: http://puppetlabs.com/puppet/puppet-open-source
+.. _Salt: http://saltstack.com/community
+.. _Ansible: http://www.ansibleworks.com
+.. _Hiera: http://projects.puppetlabs.com/projects/hiera
+.. _Artistic Licence 2.0: http://opensource.org/licenses/Artistic-2.0
+.. _Jinja2: http://jinja.pocoo.org