suggested various improvements.
Here is a partial list of them (if I have forgotten someone, please complain):
+Bdale Garbee ndale@gag.com
Henry Katz hkatz@hkatz.dialup.access.net
Klaus Kudielka kkudielk@cacofonix.nt.tuwien.ac.at
Florian La Roche florian@jurix.jura.uni-sb.de