Combining Enclosing Circle Backslash

It marks the attached symbol as prohibited. The base names the thing, while the circle and diagonal stroke supply the ban. By itself, this combining mark does not name an object or rule.

Countries worked toward shared road signs through international meetings: early efforts date to 1909 and 1926, followed by prohibition-sign work in 1928. A 1931 Geneva road-sign convention records a red diagonal stroke for waiting and parking bans. The effort continued through a 1949 protocol and the 1968 Vienna Convention. This Unicode mark brings that sign design into text as an overlay for many symbols.

How do I put it over another symbol?

Place the mark immediately after the base symbol. In text order, the symbol comes first and this mark second; the renderer then lays the enclosing circle and stroke over it. The visual stacking order differs from the character order.

The same construction can prohibit a cup, microphone, camera, or other symbol. The base supplies what is forbidden; this mark supplies the prohibition.

Why does the crossed circle look broken?

Poor font or layout support can leave it misplaced or invisible. Unicode permits combining marks after a base, but a font and text renderer may not position every base-and-mark pair correctly.

When you need a self-contained prohibition pictogram, use 🚫 or ⛔. This mark needs another symbol beneath it; those signs have their own complete artwork.