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Microtypography

From Wikipedia, the free encyclopedia

Microtypographyis a range of methods for improving thereadabilityand appearance of text, especiallyjustifiedtext. The methods reduce the appearance of large interword spaces and create edges to the text that appear more even. Microtypography methods can also increasereading comprehensionof text, reducing thecognitive loadof reading.

Aims

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Micro-typography is the art of enhancing the appearance and readability of a document while exhibiting a minimum degree of visual obtrusion. It is concerned with what happens between or at the margins of characters, words or lines. Whereas the macro-typographical aspects of a document (i.e., its layout) are clearly visible even to the untrained eye, micro-typographical refinements should ideally not even be recognisable. That is, you may think that a document looks beautiful, but you might not be able to tell exactly why: good micro-typographic practice tries to reduce all potential irritations that might disturb a reader.

— R Schlicht,Themicrotypepackage: Subliminal refinements towards typographical perfection, v2.7,2017[1]
Three images of a paragraph fromThe Red Badge of Courage(Stephen Crane,1895) to illustrate kerning, ligatures, hyphenation and microtypography (expansion/protrusion). Top: none; middle: kerning/ligatures/hyphens; bottom: all.

Methods

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Several methods can be used.

  • These methods are sometimes calledexpansion.Robert Bringhurstsuggests about 3% expansion or contraction of intercharacter spacing and about 2% expansion or contraction of glyphs as the largest permissible deviations.[2]Compare the use ofKashidain Persian typography.
  • Glyphsthat are small (such as a period) or round (such as the letter "o" ) at the end of a line can be extended beyond the end of the line to create a more even line at the edge of the text. This is calledprotrusion,margin kerning,orhanging punctuation.
  • Multiple different versions of the same glyph with different widths may be used. This method was used byGutenbergin the42-line bible,[3]but is less easy now because few fonts come with multiple versions of the same glyph. It is not practical with narrow variants of a font or with different weights of a font because the glyphs look too different from each other to create good effect. It is possible with somemultiple master fonts.
  • The interline space can be adjusted in a similar way to the interword space to create text blocks of identical height or to avoidwidows and orphans.However, this practice (sometimes called vertical justification) is frowned upon in quality typography, as it destroys the fabric of the text.[2]
  • Thetracking(interletter, as opposed to interword, space) can be increased or decreased.
  • The width of glyphs can be increased or decreased.
  • The width of theword spacescan be increased or decreased. Word spacing can be adjusted uniformly across a block of text or variably with different sized spaces used between different words. The variable adjustment method is often called syntactic cueing, phrase-based formatting, orchunkingwhen expansions or contractions are varied to group multiple words into units of meaning such as phrases or clauses. Chunking words by visually grouping them through word spacing or other white space improves reading comprehension, speed, and verbal fluency 10–40%.[4][5][6][7][8]

The following methods are not usually considered part of microtypography, but are important to it.

  • Ahyphenationmethod that can break words at an appropriate point if necessary.
  • Justificationof text. If the text is not justified, the word spacing is fixed and so only the protrusion elements of microtypography are likely to be useful.
  • Kerninghelps ensure that the space between letters is appropriate before microtypography is applied.

Availability

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AdobeIndesignprovides microtypography and is based on theHz programdeveloped byHermann Zapfand Peter Karow. As of August 2007,InDesign is available for Apple Mac OS X and Microsoft Windows operating systems.

Scribusprovides limited microtypography in the form of glyph extensions and optical margins.[citation needed]It is available for Windows, Mac OS X, Linux, various BSD flavours, and others.[9]

ThepdfTeXextension ofTeX,developed byHàn Thế Thành,incorporates microtypography. It is available for most operating systems. As of June 2022,pdfTeX is not fully compatible withXeTeX,an extension of TeX that makes it easier to use many typographic features ofOpenTypefonts (in 2010, support for protrusion was added to it.[10]). pdfTeX is almost fully supported (except for the adjustment of interword spacing and of kerning) withLuaTeX,yet another extension of TeX which offers all of the benefits of XeTeX (and some others).[11]ForLaTeX,themicrotypepackage provides an interface to the pdfTeX microtypographic extensions;ConTeXt,another typesetting system based on TeX, offers both microtypographical features such as expansion and protrusion (a.k.a. hanging punctuation) and OpenType support throughLuaTeX.

Heirloom troff,an OpenType-compatible (and open-source) version ofUNIXtroff,supports protrusion, kerning and tracking.[12]

Theword-processingpackagesOpenOffice.orgWriter andMicrosoft Office Worddo not, as of August 2015,support microtypography. They allow pair kerning and have limited support forligaturing,but automatic ligaturing is not available.[citation needed]

GNU TeXmacssupport microtypography features such as expansion, protrusion, kerning and tracking.

Robin Williams suggests methods for achieving protrusion with word processors anddesktop publishingpackages that do not make it directly available.[13]

References

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  1. ^"Macros"(PDF).mirrors.ctan.org.
  2. ^abBringhurst, Robert (2008),The Elements of Typographic Style,Hartley & Marks,ISBN978-0-88179-206-5
  3. ^Zapf, Hermann (2007),Alphabet Stories,Linotype GmbH,ISBN978-3-9810319-6-6
  4. ^Anglin, J. M.; Miller, G. A. (1968)."The role of phrase structure in the recall of meaningful verbal material".Psychonomic Science.10(10): 343–344.doi:10.3758/bf03331552.
  5. ^Frase, L. T.; Schwartz, B. J. (1978). "Typographical cues that facilitate comprehension".Journal of Educational Psychology.71(2): 197–206.doi:10.1037/0022-0663.71.2.197.
  6. ^North, A. J.; Jenkins, L. B. (1951). "Reading speed and comprehension as a function of typography".Journal of Applied Psychology.35(4): 225–228.doi:10.1037/h0063094.PMID14861125.
  7. ^Magloire, J. G. (2002)."Eye movements by good and poor readers during reading of regular and phrase-segmented texts".Unpublished Doctoral Dissertation, University of Arizona, Tucson, AZ.
  8. ^LaVasseur, V. M.; Macaruso, P.; Palumbo, L. C.; Shankweiler, D. (2006). "Syntactically cued text facilitates oral reading fluency in developing readers".Applied Psycholinguistics.27(3): 423–445.doi:10.1017/S0142716406060346.S2CID145220711.
  9. ^"Download - Scribus Wiki".wiki.scribus.net.
  10. ^code commit named "merged microtype branch to trunk"
  11. ^The microtype package manual
  12. ^"Info"(PDF).heirloom.sourceforge.net.
  13. ^Williams, Robin (2006),The Non-designer's Type Book,Peachpit Press,ISBN0-321-30336-9
  • Hochuli, Jost (2008),Detail in Typography,Hyphen Press,ISBN978-0-907259-34-3,reprint, originally published 1987{{citation}}:CS1 maint: postscript (link)
  • Forssman, Friedrich; De Jong, Ralf (2004),Detailtypografie. Typographic etiquette,Hermann Schmidt Verlag,ISBN978-3-87439-642-4


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