quoting
http://www.globalfox.it/ithn/2001/Help/Netiquette.html#1
http://puk.www8.50megs.com/newsgroup.html#9
http://digilander.iol.it/mamoFAQ/corso-quoting.txt
http://groups.yahoo.com/group/x-men-italy/files/LO/quoting.txt
http://digilander.iol.it/ifst/html/Quoting.html
http://www.cs.tut.fi/~jkorpela/usenet/brox.html
http://www.uwasa.fi/~ts/http/quote.html
http://www.netmeister.org/news/learn2quote.html
http://www.fix.no/info/message_guidelines.html#2.0.0
http://www.usenet.org.uk/ukpost.html#s3
http://www.ptialaska.net/~kmorgan/nquote.html