All materials produced by this project, including its website and any supporting documentation found on our version control system(s) are meant to be licenced under hereditarily free licences1. In choosing this kind of licences, our goal is to allow everyone to use our work so long as any contributions they make are available to be added to the proJect.
To achieve this goal we have chosen a creative commons licence. This licence was chosen by one of our members, not necesarilly because it is the best, but due to a combination of familiarity and experience. If you need to use a different licence in order to add our work to another proJect, or simply want a different licence because of your own legal aesthetic values or familiarity with it, please go ahead and ask. We are quite willing to be flexible in licencing, so long as our aims are preserved, i.e., so long as you seek to use a licence which is legaly equivalent (or close enough). In particular, we would love to use list here a FSF loved licence. If you have experience with the Free Documentation Licence in some modern incarnation and can help us use it (and convince us that it is roughly equivalent), please do not hesitate to help us out.
The licence we have chosen is the CC Attribution-ShareAlike 3.0 Unported License. The ShareAlike feature is the one which makes the licence hereditarily free. Attribution is a feature of all CC licences, but one we happen to agree with (more on this below), basically it means that you must acknowledge our authorship. Unported means that it is the international version of the licence, i.e., it hasn't been modify to suit a particular jurisdiction (country), if you want to use a particular ported version, feel free to contact us.
Feel free to use any current or future version of this particular licence (that means essentially the same licence, but with a version number larger or equal than 3.0) without consulting us. (We trust CC to keep the spirit of the licence, if not the letter.) In order to use our work online, all you need to do is use the html code at the bottom of this page in a suitable place on the site where you are publishing it. You may look at the source of this page and copy it, or you may go to the CC website and use their automated licence chooser to generate your own. It's that simple!
Saddly enough, like everyone else, we need to eat. What this means in practice ammounts to the following two considerations. Firstly, we fully support the inclusion of the attribution clause in our CC licence. We figure it doesn't really restrict your freedom to have to acknowledge the source of our work (i.e., us). This is a time honoured tradition in academia; it helps us get recognition and it doesn't cost much to those who redistribute or transform our material. Lastly, if you want to use our material but are allergic to freedom, you don't get an automatic licence to use it, but you are more than wellcome to woo us with a suitable amount of beer money.