Monospaced font

Short description: Font whose characters occupy the same amount of horizontal space

"Monospace" redirects here. For the font named "Monospace", see Monospace (typeface). For the car style, see Monovolume.

Not to be confused with Monotype.

Comparison between variable-width fonts and monospaced fonts

A monospaced font, also called a fixed-pitch, fixed-width, or non-proportional font, is a computer font whose letters and characters each occupy the same amount of horizontal space.[1][lower-alpha 1] This contrasts with variable-width fonts, where the letters and spacings have different widths.

Monospaced fonts are customary on typewriters and for typesetting computer code.

Monospaced fonts were widely used in early computers and computer terminals, which had limited graphical capabilities. Hardware implementation was simplified by using a text mode where the screen layout was addressed as a regular grid of tiles, each of which could be set to display a character by indexing into the hardware's character map. Some systems allowed colored text to be displayed by varying the foreground and background color for each tile. Other effects included reverse video and blinking text. Nevertheless, these early systems were typically limited to a single console font.

Even though computers can now display a wide variety of fonts, the majority of IDEs and software text editors employ a monospaced font as the default typeface. This increases the readability of source code, which is often heavily reliant on distinctions involving individual symbols, and makes differences between letters more unambiguous in situations like password entry boxes where typing mistakes are unacceptable.[2] Monospaced fonts are also used in terminal emulation and for laying out tabulated data in plain text documents. In technical manuals and resources for programming languages, a monospaced font is often used to distinguish code from natural-language text. Monospaced fonts are also used by disassembler output, causing the information to align in vertical columns.

Optical character recognition has better accuracy with monospaced fonts. Examples are OCR-A and OCR-B.

The term modern is sometimes used as a synonym for monospace generic font family. The term modern can be used for a fixed-pitch generic font family name, which is used in OpenDocument format (ISO/IEC 26300:2006) and Rich Text Format.[3][4]

Examples of monospaced fonts include Courier, Lucida Console, Menlo, Monaco, Consolas, Inconsolata, PragmataPro and Source Code Pro.

## Contents

* 1 Use in art
* 2 Tabular figures
* 3 Other uses
* 4 See also
* 5 Notes
* 6 References

## Use in art

Multiple art forms have developed within computers' and typewriters' monospaced typographic settings in which the nth character of every line align vertically with each other. (Such a group of characters is sometimes called a column.) A proportional and monospaced font's reproduction of an element of ANSI art, line drawing, is illustrated below.

Proportional font | Monospaced font

|

┌─┐ ┌┬┐
│ │ ├┼┤
└─┘ └┴┘

┌─┐ ┌┬┐
│ │ ├┼┤
└─┘ └┴┘

The failure of a proportional font to reproduce the desired boxes above motivates monospaced fonts' use in the creation and viewing of ASCII and ANSI art. Some poetry composed monospaced on typewriters or computers also depends on the vertical alignment of character columns. E. E. Cummings' poetry is often set in monospaced type for this reason. Some classic video games (e.g. Rogue and NetHack) and those imitating their style (e.g. Dwarf Fortress) use a monospaced grid of characters to render their state for the player. Quiz Show (1976) is believed to be the first video game to use 8×8 monospaced "arcade font", which got widely adopted by computer games of the time.

## Tabular figures

See also: Typeface § Typesetting numbers

Some fonts, such as Hepta Slab (shown above), contains both proportional (left) and tabular (right) figures. CSS can be used to choose between these two sets of numeral glyphs.

File:Proportional & Tabular figures.tiff Many fonts that generally are not monospaced have numerals that are known as tabular figures.[5][6] As tabular spacing makes all numbers with the same number of digits the same width, it is used for typesetting documents such as price lists, stock listings and sums in mathematics textbooks, all of which require columns of numbers to line up on top of each other for easier comparison.[7] Tabular spacing is also a common feature of simple printing devices such as cash registers and date-stamps.[8] Fonts intended for professional use in documents such as business reports may also make the bold numbers take up the same width as the numbers in regular style; the consistency between styles is called "duplexing".[9]

Duplexed numerals in Concourse. The bold and non-bold digits have the same width.

The alternative to tabular spacing is proportional spacing, which places the numbers closely together, reducing empty space in a document, and is thought to allow the numbers to blend into the text more effectively.[9] With modern fonts using the TrueType or OpenType formats, it is possible to include both proportional and tabular figures in the same font file, and choose between them using font options settings in applications such as word processors or web browsers.[10][11][12]

## Other uses

In biochemistry, monospaced fonts are preferred for displaying nucleic acid and protein sequences, as they ensure that the representation of every nucleotide or amino acid occupies the same amount of space. Alignment of the letters makes it easier to compare different sequences visually.

Both screenplays and stage play scripts frequently use monospaced fonts, to make it easier to judge the time a script will last for from the number of pages. The industry standard is 12 point Courier. A tradition holds that, on this format, one page of script will take one minute of screen or stage time.[13]

Monospaced fonts are frequently used in tablature music for guitar and bass guitar. Each line in a tabulature represents a guitar string, which requires that chords played across multiple strings be tabbed in vertical sequence, a feat accomplished only with the predictability of fixed width.

## See also

* List of monospaced typefaces
* Duospaced font
* Mathematical Alphanumeric Symbols

## Notes

1. ↑ This definition does not apply to fonts with CJK support; see Duospaced font § In CJK typography.

## References

1. ↑ Rosendorf, Theodore (2009). The Typographic Desk Reference. New Castle, Delaware: Oak Knoll Press. p. 12. ISBN 978-1-58456-231-3. https://archive.org/details/typographicdeskr0000rose/page/12.
2. ↑ Spolsky, Joel (24 October 2001). "User Interface Design For Programmers". https://www.joelonsoftware.com/uibook/fog0000000249.html.
3. ↑ OpenDocument v1.1 specification, https://docs.oasis-open.org/office/v1.1/OS/OpenDocument-v1.1.pdf, retrieved 2010-05-01 .
4. ↑ Microsoft Corporation (June 1992) (TXT), Microsoft Product Support Services Application Note (Text File) – GC0165: RICH-TEXT FORMAT (RTF) SPECIFICATION, https://latex2rtf.sourceforge.net/RTF-Spec-1.0.txt, retrieved 2010-03-13 .
5. ↑ "A New Face for Adobe". Adobe. https://blog.typekit.com/2009/05/05/a_new_face_for_1/.
6. ↑ Shinn, Nick. "Shinntype Modern Suite specification". Shinntype. http://shinntype.com/wp-content/uploads/files/pdf/Scotch_Modern.pdf.
7. ↑ Strizver, Elaine. "Proportional vs. Tabular Figures". Monotype Imaging. http://www.fonts.com/content/learning/fontology/level-3/numbers/proportional-vs-tabular-figures.
8. ↑ "Revenue". Hoefler & Frere-Jones. http://www.typography.com/fonts/numbers/inside/revenue.
9. ↑ 9.0 9.1 "Gotham: Numerics". Hoefler & Frere-Jones. http://www.typography.com/fonts/gotham/features/gotham-numerics.
10. ↑ Butterick, Matthew. "Alternate figures: consider the context". https://practicaltypography.com/alternate-figures.html.
11. ↑ Saller, Carol. "Old-Style Versus Lining Figures". Chronicle of Higher Education. http://chronicle.com/blogs/linguafranca/2012/03/14/old-style-versus-lining-figures/.
12. ↑ Bergsland, David. "Using numbers in the proper case". Design & Publishing Center. http://www.graphic-design.com/DTG/bergsland/numbering_typography.html.
13. ↑ August, John (22 March 2006). "How accurate is the page-per-minute rule?". https://johnaugust.com/2006/how-accurate-is-the-page-per-minute-rule.

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