The Atlassian Contributor License Agreement Comes of Age
http://blogs.atlassian.com/news/2009/07/the_atlassian_contributor_license_agreement_comes_of_age.html

Maddox, Sarah
Atlassian Blog, The
2009

Abstract:

In early March we opened up the Atlassian documentation to the wider community. We added a CC-by (Creative Commons Attribution) license to our product documentation. We invited people to contribute to our documentation after signing an Atlassian Contributor License Agreement (ACLA). At that stage, the ACLA was just starting its three-month trial. The trial period has now ended, and we're delighted to say: it's a go!