Monospaced font

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A monospaced font, also called a fixed-pitch, fixed-width, or non-proportional font, is a font whose letters and characters each occupy the same amount of horizontal space.^[1][a] 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

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]

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.

┌─┐ ┌┬┐
│ │ ├┼┤
└─┘ └┴┘

┌─┐ ┌┬┐
│ │ ├┼┤
└─┘ └┴┘

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.^{[citation needed]} 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.

See also:

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.

Many fonts that generally are not monospaced have numerals that are known as tabular figures.

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. ISBN 978-1-58456-231-3
   .
2. ^ Spolsky, Joel (24 October 2001). "User Interface Design For Programmers". Joel On Software. Retrieved 17 November 2014.
3. ^ OpenDocument v1.1 specification (PDF), retrieved 2010-05-01.
4. ^ Microsoft Corporation (June 1992), Microsoft Product Support Services Application Note (Text File) – GC0165: RICH-TEXT FORMAT (RTF) SPECIFICATION (TXT), retrieved 2010-03-13.
5. ^ "A New Face for Adobe". Typekit Blog. Adobe. Retrieved 8 January 2016.
6. ^ Shinn, Nick. "Shinntype Modern Suite specification" (PDF). Shinntype. Archived from the original (PDF) on 25 February 2021. Retrieved 16 October 2015.
7. ^ Strizver, Elaine. "Proportional vs. Tabular Figures". fonts.com. Monotype Imaging. Retrieved 4 August 2014.
8. ^ "Revenue". Hoefler & Frere-Jones. Retrieved 4 August 2014.
9. ^
   Hoefler & Frere-Jones
   . Retrieved 27 September 2014.
10. ^ Butterick, Matthew. "Alternate figures: consider the context". Butternick's Practical Typography.
11. Chronicle of Higher Education
    . Retrieved 4 August 2014.
12. ^ Bergsland, David. "Using numbers in the proper case". Design & Publishing Center. Archived from the original on 19 October 2007. Retrieved 4 August 2014.
13. ^ August, John (22 March 2006). "How accurate is the page-per-minute rule?". Retrieved 17 November 2014.