The Cairn Hackening!
The CairnHackening is the working title for an upcoming Cairn hack by Andrew Duvall, aka @duvelmandice.
CC-BY-SA 4.0
TheCairnHackening started as a hack of Cairn. Both are written using the Creative Commons — Attribution-ShareAlike 4.0 International — CC BY-SA 4.0. This means that you can copy and share the text as long as you properly attribute the sections and give those portions the same license.