shilling mark

Solidus (punctuation)

The solidus (⁄ ) is a punctuation mark that is not found on standard keyboards. It may also be called a shilling mark or in-line fraction bar or a forward-slash. Its Unicode encoding is U+2044.

The solidus is similar to another punctuation mark, the slash, which is found on standard keyboards; the slash is closer to being vertical than the solidus. These are two distinct symbols that have entirely different uses. However, many people do not distinguish between them, and when there is no alternative it is acceptable to use the slash in place of the solidus.

Typographers should note that both the ISO and Unicode designate the solidus as FRACTION SLASH U+2044 and the slash as SOLIDUS U+002F. This contradicts long-established English typesetting terminology.


The names solidus and shilling mark have the same background. In the Commonwealth of Nations, before decimalisation, currency sums in pounds, shillings, and pence were abbreviated using the '£' symbol, the 's.' symbol, and the 'd.' symbol — collectively £sd — referring to the libra, the solidus, and the denarius. The 's.' was written using a long s, that was further abbreviated to the symbol, and suppression of the 'd.'; thus '2 pounds, 10 shillings, and 6 pence', written as £2,10⁄6 (instead of '£2, 10s. 6d.'), and '6 shillings' would be written as 6 ⁄-. This usage caused the names solidus (given the abbreviation's historical root) and shilling mark to be used as names for this character.



The shilling mark is used to denote shillings, see the History section above.


The solidus is used in the display of ratios and fractions as in constructing a fraction using superscript and subscript as in 123456 , or on the same level as in 2350. It should be used instead of a slash, and is preferred whenever possible.

The solidus is found in many legacy Apple Macintosh character sets. It can be typed on a Macintosh computer by pressing option+shift+1. Systems capable of fine typography display this result as a true fraction with small numbers.

Unicode also distinguishes the DIVISION SLASH U+2215 (∕ ) which may be more oblique than the normal solidus character.


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