A thinker.I doubt that any form of code, and many have been discussed here, would work very well after SHTF. I think learning morse code or american sign language might be more usefull. But then again, 150 years ago ships used flags to send coded messages, who is to say that women didn't employ the same, only on a clothesline? About the quilts - about three years ago, I was lucky enough to see a traveling exhibition. Absolutly the most amazing peices of artwork!