On this Wikipedia the language links are at the top no wheat flour bread the page across from the article title. This article is about the graphic symbol used to denote prohibition.

35 percent of the total area of the sign within the outer circumference of the “prohibition sign”. The “prohibition” symbol is used on traffic signs, so that drivers can interpret traffic laws quickly while driving. It is also used on packages sent through the mail and sealed boxes of merchandise that are sold in stores. Using a graphical symbol is useful to convey important warnings regardless of language. In product documentation, the symbol may be accompanied by drawings of the product being threatened by the prohibited items: for instance, a cartoon of a floppy disk being menaced by horseshoe magnets. It is also used on clothing, linens, and other household products to indicate the care, treatment or cleaning of the item. Some companies use the “prohibition sign” when describing the services they offer, e.

The Ghostbusters logo is a fictional example of this, although it uses a mirror image of the symbol with the slash going from upper right down to lower left. The official prohibition sign design characteristics are governed by regional and international standards. The symbol’s canonical definition comes from the International Organization for Standardization which published ISO 3864-1 in 2002, a revision of a standard first published in 1984. ISO 3864-1 sets the rules for the color, shape, and dimensions of safety signage. The regulations include the incorporation of text and pictograms, with reference to materials used, sign size, and viewing conditions.

The introduction includes language on the need for using as few words as possible to convey information. The 3864 standard defines the color and design for the prohibition symbol. The diagonal is centered in the circle and at a 45 degree angle going from upper left to lower right. It is recommended to have a white outside border that is 2. The circle and line are red, the background is white, and the pictogram or descriptive text is black.