This is a lax, permissive, and weak free software program license that is suitable with the GPL. In 2010, he was sentenced to three years' probation for piloting a aircraft 26 a long time soon after shedding his pilot's license and rigging certificates. We advise that you not use this license for new software package that you compose, but it is okay to use and improve Plan 9 less than this license. For further discussion, see Rea 2001.