Arabic numeral variations

Lining figures are generally designed all the same setting width, as this makes the printing of mathematical and trigonometrical tables simpler to do and clearer to read.

British presses have been partial to "old-style" numerals,[citation needed] even though typewriters cannot print them and they are not assigned separate Unicode values.

In English-speaking countries, zero was often slashed in technical writing, and was used in many computer keyboards, screens and printing methods.

The "Crossed Seven" is commonly used throughout Continental Europe, but, outside of mathematics, is only sporadically used in the British Isles or the United States, and it is not permitted to be written on some inventory tags that are optically read by computers.

[citation needed] There are two forms of the numeral one used in France, as seen on Citroën cowls: Central Europe uses a 'one' that has two half-serifs so it looks somewhat like a 'Z'.