Arial, sometimes marketed as Arial MT, is a typeface and a computer font packaged with Microsoft Windows, other Microsoft software applications, and many PostScript computer printers. The typeface was designed in 1982 by Robin Nicholas and Patricia Saunders for Monotype Typography as a cheaper substitute for (but not an identical copy of) Linotype's popular Helvetica. Many typographers regard it as a poor substitute for Helvetica, especially in print media.
Arial is also a typeface family comprising standard Arial (Arial Std) and variants, including Arial Black, Bold, Extra Bold, Condensed, Italic, Light, Medium, Monospaced, Narrow, and Rounded, plus combinations like Rounded Light and Extra Bold Condensed, and so on.
Though nearly identical to Helvetica in both proportion and weight (see figure), the design of Arial is in fact a variation of Monotype's Grotesque series, and was designed with computer use in mind. Subtle changes and variations have been made to both the letterforms and the spacing between characters, in order to make it more readable on screen and at various resolutions.
Since 1999, Microsoft Office has shipped with Arial Unicode MS, a version of Arial that includes many international characters from the Unicode standard. This version of the typeface is the most widely distributed pan-Unicode font.
PostScript does not require support for a specific set of fonts, but Arial and Helvetica are among the 40 or so typeface families that PostScript level 3 devices typically support.PLR3 Supplement, appendix D (1999) and The Adobe PostScript 3 font set; accessed April 29, 2006.
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