swatch-2.2.tar		- Unix tar file of swatch-2.2 directory and files
swatch-2.2.tar.asc	- PGP signature of swatch-2.2.tar
swatch-2.2.tar.Z	- swatch-2.2.tar compressed with Unix compress
swatch-2.2.tar.gz	- swatch-2.2.tar compressed with GNU gzip

If you have PGP you can verify the swatch tar file with the swatch-2.2.tar.asc
detached signature file.  The swatch-2.2.tar.asc file is signed with the key
for user ID: SUNSeT Team <security@Stanford.EDU>, Key ID 736EEC29.

This same information applies to the swatch-3* files.

You can get this key from any of the public PGP key servers, by fingering
security-key@netserver.stanford.edu, or by viewing the web page
http://www.stanford.edu/~security/.