• Freely use and distribute it for non-commercial or for commercial purposes
• Create derivative works of it

Under this condition:

• Credit me as author and use the same license. To do so add "Nicolas Völcker, Wikimedia Commons, CC-BY-SA" good legible next to the image.

Please, use this work legally fulfilling the terms of the license!

Please, let me know if you use this work outside Wikimedia Commons sending me an email to SDKmac or to nvoelcker1(at)gmail.com with reference to the URL in case of a website or to the ISBN/author/title in case of a printed work or ebook. I am always very glad if you consider to send me a copy of the publication or a promocode of the eBook as gratitude for using my works. Note: This file has been released under a license which is incompatible with Facebook's licensing terms. It is not allowed to upload this file to Facebook.

Furthermore, if you

• want to use this work under other conditions,
• want me to rework this file out of the original RAW file, or get the RAW file, or
• search for a similar picture,

please, don't hesitate to contact me.