Rectify Bluelighter Joined Oct 20, 2008 Messages 6,728 Oct 3, 2019 #1 P --> Q. ~Q --> ~P. That Is All. Mind Your P's & Q's.
Xorkoth Bluelight Crew Joined Feb 8, 2006 Messages 65,036 Location In the mountains Oct 5, 2019 #2 Ditto
