From: yogi@cs.ubc.ca (Yossi Gil)
Subject: Re: How do I cancel in nn/rn/trn/gnus/vm/vms/tin/xrn etc?
Organization: Computer Science, University of B.C., Vancouver, B.C., Canada
Date: Wed, 12 Aug 92 17:03:29 GMT

yogi@cs.ubc.ca (Yossi Gil) writes:

>In an attempt to fight non-conforming articles and threads,
>I would like to send email to users asking that they will
>cancel their non conformant articles.

Here is what I have so far, it is based on a periodic postin
(credits at the end) and some users help.  Can you help in filling
in the missing gaps:


-----------------------------------------------------------------------

How to take back what you say..... [also a short survey of news systems]

This is a short tutorial on how to cancel an article:

Almost every news reader requires that you find the article and start
reading it before you may cancel it.  Once you have found the article,
please skip to the section regarding your news reader.  In general,
the 'cancel this article' command should be bound to the 'c' or 'C' keys.

Conventions:
	...	signifies insignificant text

NN:
	As you're reading your article, press the C key at the prompt.
	NN will then ask you to "Confirm cancel", just type the letter y.  It
	will then say "Cancelling article <article-id> ..." and then go on to
	the next selected article as if you had just finished reading that
	article and had hit the n key to go to the next article.

RN:
	At the article prompt, press the C key.  RN will then cancel
	the article for you and will re-display the article prompt.

READNEWS:
	At the "More? [...]" prompt, type the lowercase letter c and
	then press the return key.  The article will then be cancelled
	and readnews will go on to show you the next article.

VNEWS:
	At the "more?" prompt, type the c key.	VNEWS will then ask you
	to confirm by saying "cancel [n]?" at which point you press the
	y key.	VNEWS will then go on to display the next article.

VN:
	From within the article you would like to cancel, press 'f' to
	followup.  At the top of the article, duplicate the "References"
	line.  Chance "References" to "Control".  Then, put the word
	"cancel " before the message ID.  Finally, post your followup.

NOTES:
	Press the D key.  Notes will respond with "Delete?".  Type y.
	Notes sends out articles in batches.  If an article has already
	been transfered to the network the article will not be deleted.
	Notes will not respond to a cancel message.  It will only delete
	articles created locally.

ANU-NEWS:
	While reading an article, enter the "CANCEL" command at the
	NEWS> prompt.

VM:
	For VM, users using netnews (directly from disk, not via NNTP),
	must positioning the cursor on the article and type cancel.
	The NNR VM NNTP client doesn't have cancel possibilities.

		Van Uytven Herman <SYSTHVU@cc1.kuleuven.ac.be>]

TIN:
	After bringing up the message you would like to cancel, type
	a capital C.  In tin PL5, you will be asked to confirm this by
	hitting a lower-case c.  Other news readers I'm not sure about
	but it's probably a similar mechanism.

		Doug McCarthy <dmccart@gomez.intel.com>

GNUS:
	In Subject Mode: `C'
     Cancel the current article you posted
     (`gnus-Subject-cancel-article').

  Suppose you post an article and then later realize that you made a
horrible mistake.  You really do not want anyone to see your article.
You want the article to be removed from any machines that it may have
reached.  The command `C' (`gnus-Subject-cancel-article') is intended to
do this.  First select the offending article as current, then type `C'.

Warning: Cancels are not 100% effective--they do not traverse
news-to-mail gateways (or news-to-anything else gateways).
Remember that there are propagation delays--a lot of sites
receive news in daily batches and your mistaken posting may
stick around for a long time before its cancel catches up
with it--cancels ARE news articles--they are EXPENSIVE just
like news articles (remember that warning about Are you sure
you want to spend thousands of dollars of other people's
money?), and can get lost in transit just like other news
articles.  (Also, some sites simply do not honor cancels!)

The best time to retract a posting is BEFORE you send it. --ENM

From Andrew Scott Beals, Daniel Faigin, Eric P. Scott, John Fereira,
Michael Sullivan.

Attribution information will disappear with time.
-------------

Taken from:

Newsgroups: ca.general,ba.general
Subject: [l/m 6/24/90] How to cancel news articles
Reply-To: eugene@amelia.nas.nasa.gov (Eugene N. Miya)
Followup-To: poster
Organization: NAS Program, NASA Ames Research Center, Moffett Field, CA
--
Joseph (Yossi) Gil                 {alberta,uw-beaver,uunet}!ubc-cs!yogi
Dept. of Computer Science          yogi@cs.ubc.ca (cs.ubc.ca=137.82.8.5)
6356 Agricultural Road., Univ. of B.C.,             Tel: +1-604-822-8175
Vancouver, British Columbia, V6T 1Z2, Canada.       Fax: +1-604-822-5485