Talk:No symbol

Line Direction
I read somewhere that the correct "no" symbol has a line running diagonally from top left to bottom right because the symbol is actually a combination of the letters N and O. Anyone have any info on this?


 * What is this opposed to?? The "no" symbol is, of course, a circle with a diagonal line through it, as opposed to the "yes" symbol, which is just a circle. 66.32.118.139 22:40, 13 Apr 2004 (UTC)


 * As opposed to a circle running from top right to bottom left. 68.40.127.32 01:11, 25 August 2005 (UTC)

I've been looking for some reference to the derivation of the symbol but so far without luck. It has always seemed logical to me that it's literally an N superimposed over an O, which makes it a visual representation of a word that's meaningful in several languages. That would also mean that the reversed version (as widely popularized by the "Ghostbusters" logo) is more definitively incorrect usage (rather than simply an alternative form). — Preceding unsigned comment added by 2601:246:4B00:D12D:D97E:AB67:1161:C143 (talk) 18:50, 30 November 2016 (UTC)

Image replaced
Replaced with.

Article
Can anyone think of a category for this article?? 66.32.255.134 00:15, 18 Jun 2004 (UTC)


 * Is there a symbols category? porge 02:11, 18 Jun 2004 (UTC)

Giant Wikipedia article
There is a giant Wikipedia page mentioned in What links here for this article. Can anyone find out what to do with it?? Its title says "Suck". 66.245.16.193 14:41, 17 Sep 2004 (UTC)

Observations
Quote: On European traffic signs, no diagonal line is used, i.e. the symbol is round with a red border and a (usually black) pictogram on white ground inside.
 * Not always. See these "No right turn" signs (similar ones are used all over Europe):


 * United Kingdom
 * France

Quote: In the UK, a filled blue circle (with no white inner circle) is used to indicate mandatory actions, e.g. the wearing of a helmet on a building site.
 * That applies not just in the UK but in almost every European country, e.g. (Turn left ahead):


 * United Kingdom
 * France

Beware generalizations, however. Compare the "No Entry" and "Straight Ahead Only" signs at. Ireland is in Europe but the regulatory signs there agree with those in use in Argentina and Mexico, amongst other places. -- Picapica 18:26, 27 Mar 2005 (UTC)

Where did the "No" Symbol come from?
Does anyone have any idea who first drew the no symbol? Or even in what country it originated? Or when? 68.40.127.32 01:13, 25 August 2005 (UTC)
 * This is a good question. I'd like to know that myself. Vchimpanzee ·  talk  ·  contributions  · 18:43, 5 April 2010 (UTC)

Medical Use
I have seen the No Symbol on disposible medical devices. It's always written as "2 - space -no symbol", meaning "don't use this item twice." It's interesting that in this usage, the no symbol appears by itself and does not overlap the number two.--Navstar 12:40, 11 June 2006 (UTC)

Use of Examples
It seems inappropriate to have Bad Religion's crossbuster as the featured image for this article.

In the combining example, why is there a space between the ♪/∞ characters and the  ⃠? As I understand it, this combines the   ⃠ with the space character. The ♪/∞ characters still appear partially inside the circle in my Firefox, but I think that's a rendering quirk. Oh and the ✝ ⃠ example is now gone completely. It may be inappropriate as a featured image but I think it's a good example for a real-world application. It's used by atheists outside the music context.--2.247.246.227 (talk) 08:16, 19 November 2018 (UTC)

External link not spam
The link to http://www.freesignage.co.uk/prohibition_signs.php was previously deleted as spam. However the images on this site are free, and I do not think they are spam. Instead of adding the link to the UK version, as above, I have added a link to the US sister version since this article currently seems primarily focused on UK usage of the No symbol. − Twas Now 02:29, 9 January 2007 (UTC)

Requested move

 * The following discussion is an archived discussion of the proposal. Please do not modify it. Subsequent comments should be made in a new section on the talk page. No further edits should be made to this section. 

The result of the proposal was no consensus. JPG-GR (talk) 04:02, 22 July 2008 (UTC)

I have just purchased the defining standard for this symbol, ISO 3864-1:2002, and it describes this shape as a "Prohibition sign", not a symbol. I therefore propose that its title should be changed to "Prohibition sign". But since that page already exists as a redirect to this page, I can't. Adding the Move template. —Preceding unsigned comment added by Peter K. Sheerin (talk • contribs)


 * Oppose. Everyone knows it as the "no" symbol. It represents the word "no". Georgia guy (talk) 21:06, 5 July 2008 (UTC)
 * Commit - I've always heard of it referred to as the "Not" sign or occasionally the "Don't" sign. The only time I've seen it referred as the "prohibition/prohibited" sign is when taking the written part of the drivers exam. From what I understand per WP:NCON/WP:NAME etc, "Prohibition sign" would be a proper noun and "No symbol" would be a descriptive name. I don't see any clear criteria to chose between proper nouns and descriptive names. I does seem that "no symbol" is more commonly used 422,000 vs 12,500 hits in google. PaleAqua (talk) 23:24, 16 July 2008 (UTC)


 * Support. Wikipedia entries shouldn't be about what "everyone" (by this I presume you mean the lay public) thinks the correct thing is, but rather what the actual thing is. That's what redirects are for, in the first place, IMHO--to redirect people from a common wording to the official or best one. The title of an entry will always be viewed as authoritative, and it should be correct, not what people who haven't read the source documentation think. —Preceding unsigned comment added by Peter K. Sheerin (talk • contribs) 20:57, 6 July 2008 (UTC)
 * Oppose. No evidence has been offered supporting the move in terms of naming conventions, rather the proposer seems to be suggesting that this policy should not be applied. If this is unclear, perhaps read and contribute to the proposal at official names and its talk page. Andrewa (talk) 21:59, 6 July 2008 (UTC)
 * Oppose. This seems to directly contradict the naming conventions. The title should be used to allow people to find the article. An explanation in the lead that the proper name is the prohibition sign should suffice. DigitalC (talk) 06:41, 8 July 2008 (UTC)


 * Comment. I've always thought of it as the "'anti-' symbol," for what that's worth. gohlkus (talk) 23:34, 12 July 2008 (UTC)


 * Support, per international standard. Current name is grammatically ambiguous. --Voidvector (talk) 01:19, 22 July 2008 (UTC)
 * The above discussion is preserved as an archive of the proposal. Please do not modify it. Subsequent comments should be made in a new section on this talk page. No further edits should be made to this section.

Use in computer software
Here is my question.

It must be a Windows feature. Vchimpanzee ·  talk  ·  contributions  · 18:42, 5 April 2010 (UTC)


 * New address. If the Internet is slow and I get this box that says "Dial-up" at the top, and I click on the Red X, then it appears if I try to click on anything that requires Internet acccess. That's yet another use. Vchimpanzee ·  talk  ·  contributions  · 20:39, 9 April 2010 (UTC)


 * Although it's not appearing now, there is sometimes a red one at the bottom of my computer screen below what looks like an eye. Moving my mouse over it produces the message "Privacy report". Vchimpanzee ·  talk  ·  contributions  · 20:59, 9 April 2010 (UTC)

Ghostbusters
Should the article have some sort of mention of the Ghostbusters symbol with the ghost crossed out by the no symbol? It's certainly one of the most famous uses of the symbol outside of use in traffic.69.212.124.162 (talk) 18:46, 24 February 2013 (UTC)

It also seems to have greatly popularized the use of the symbol, and also caused many of these derivatives to utilize the arguably incorrect "forward-slash" version which I have never seen in a traffic or similarly official context. — Preceding unsigned comment added by 2601:246:4B00:D12D:D97E:AB67:1161:C143 (talk) 18:44, 30 November 2016 (UTC)

Images needed in Uses section
It would improve this article if all the examples in the Uses section had images. Lentower (talk) 14:50, 17 July 2013 (UTC)

History
Some history of the invention, creation and use of the symbol would be useful. It's ubiquitous nowadays, but clearly it wasn't being used by the Ancient Greeks. Whose idea was it? When was it invented? Where was it first used? Etcetera. 67.0.86.23 (talk) 12:20, 12 August 2013 (UTC)

Combining Character claim is not demonstrated
In the second paragraph, it makes it apparent that I'm supposed to [see] the 'd' underneath the "no symbol." In fact, under Firefox (v24.0, Win7-64), I see them as "d@" (where the @ is the a correctly rendered prohibiting circle-slash character). It does not overwrite (or even slightly overlap) the preceding 'd' character. What is more, the circle-slash character only appears as a hollow box (missing character, I suppose) using browsers Chrome and IE (v10). Does it actually appear as it claims for anyone else? I'm curious. At the very least, it should probably offer the caveat that the HTML might not produce the intended result for all (at this point, perhaps most?) readers. 140.146.206.8 (talk) 21:05, 23 October 2013 (UTC)

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