type abreviations in the search box at the top, it will take you to all the posts of them, there are lots.
quilts of valor are done by so many people here that sometimes they forget that not everyone knows what that is. most of the others are pretty common on the internet, like dd (darling daughter) dh...husband, ect. but every once in awhile one will pop up that is (not a usual one) i had to stop and think about it for a moment when i first saw your question...had to stop and think about what the heck p.l was supposed to mean...must have been totally evident to the person who wrote it...but it took me a long time to figure out it was Project Linus...
anyway,,,when all else fails, ask :)