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Last updated: March 29, 2001	Unless otherwise specified; text, tables, photographs, maps and other graphics © 1999-2001 Gunnar Ljungstrand

Copyleft

What is copyleft?

Copyleft in the strict sense is the form of copyright license used in the GNU Public License (GPL) by the Free Software Foundation. This is really only directly appliciable to computer software, so here I use the term in a looser sense, meaning roughly "copyright used to ensure users freedom, rather than taking it away from them".

So, what may I do with the material on this site?

With the material I possess copyright to - text, data, tables, images, diagrams, maps etc. - you are allowed to do the following, without asking for a permit:

• Linking to completely free, including deep links, that is, not only to the main page.
• Using, printing or copying for your own use, or non-commercially (that is, without getting paid) to friends and acquaintances.
• Mirroring material on your own site, on condition that you clearly state me as originator, with a link to my site.
• Using material in your own non-commercial work, on condition that you clearly state me as originator, with a link to my site if you put in on the net.
• Creating and distributing modified non-commercial versions of text or graphics, on condition that you clearly state me as originator, with a link to my site if you put in on the net, and that you clearly mark what is original and what is your changes.
• If you find any of my material useful you could send me an email telling me about it. You don't have to, but I would appreciate any feedback. :-)

• Use any material, directly or in modified form, in commercial enterprise, neither directly nor indirectly. You may not sell copies of any text or graphics, in electronic form or printed, without my consent. Neither are you allowed to use any material for advertising purposes, to sell any other good or service, without a permit.

Material on this site, to which I do not possess copyright - e.g. some images - are used with the consent of the copyright holders, respectively, who retain all rights and decide on what conditions their material may be used.

	Top of document	Site map	Email the author	Copyleft information	Detta dokument på svenska
Last updated: March 29, 2001	Unless otherwise specified; text, tables, photographs, maps and other graphics © 1999-2001 Gunnar Ljungstrand