Letter spacing
Tracking can similarly go in either direction, but with metal type, one could make groups of letters only farther apart (positive spacing).
Increased letter-spacing has sometimes been used for emphasis, most often in blackletter typesetting and in typewriter manuscripts, where alternative emphatics like italic or bold fonts are less available.
In the days of machine-implemented lead typesetting, such as Linotype machines and the Monotype System, letter spacing had to be uniform.
In modern digital page-layout software, high-end applications all use relative measurements proportional to the size of the type.
[6][7][8] Contrarily, tighter spacing is thought to decrease comprehension among such population subgroups, and is accompanied by crowding and a perception of smallness.
Due to deadlines, news editors do not usually have time to rewrite paragraphs that end in split words or create widows or orphans.
[citation needed] Discussing Comic Sans, some researchers, including Sue Walker, Jenny Thomson, and John Stein, posit that the typeface's wide spacing, rather than the shape of its characters, is the reason for its success among dyslexics.
While tracking adjusts the space between characters evenly, regardless of the characters, kerning adjusts the space based on character pairs. There is strong kerning between the "V" and the "A" and no kerning between the "S" and the "T".