The MirOS Licence is a free content licence originated at The MirOS Project for their own publications because the ISC license used by OpenBSD was perceived as having problems with wording and too America centric. It has strong roots in the UCB BSD licence and the Historical Permission Notice and Disclaimer with a focus on modern, explicit, legible language and usability by European, specifically German, authors. It is a permissive ("BSD/MIT-style") licence.