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Widgepedia is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) license. This means that you are able to share (that is: copy and redistribute the material in any medium or format) and adapt (that is: remix, transform, and build upon the material) as log as you follow these terms:

Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests that we endorse you or your use.

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Note that the print version of Widgets (ISBN: 978-194-11-4000-0) is NOT under a CC BY-NC-SA license. It is under an All Rights Reserved international copyright license and may not be copied without permission from Atama-ii Books.