This article is from the Urban legends FAQ, by Terry Chan tchan@dante.lbl.gov and Peter van der Linden linden@eng.sun.com with numerous contributions by others.
T = 100% scientific truth
Tb = believed true, but not conclusively proven
F = 100% falsehood
Ft = A legend, mostly untrue, but with a true occurrence or
known origin.
Fb = believed false, but not conclusively proven
U = unanswered and may be unanswerable
P = Maybe it didn't happen, but it's scientifically possible
(used extremely sparingly, where the opposite is expected,
as it could apply to just about every legend)
There is a comment, "*", on certain lines in the FAQ. This indicates
that there is further information on this point available via anonymous
ftp. See the AFU anonymous ftp sites noted in Part I of the FAQ for
more information.
 
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