FontTracking

is an option for Style and Cell that specifies how condensed or expanded you want the font in which text is rendered to be.

Details

Typical settings are "Condensed" and "Extended". The default is "Plain".
For some fonts and on some computer systems, additional settings are supported, such as "Narrow", "Compressed", "SemiCondensed", and "Wide".

Different settings for FontTracking:

Wolfram Language code:

Framed@Column[Table[Style["AaBbCcDd", FontTracking -> t], {t, {"Narrow", "Condensed", "SemiCondensed", "Plain", "Extended", "Wide"}}]]

Font tracking can be specified in style-related options:

Wolfram Language code: Table[LogPlot[{x ^ x, x!}, {x, 1, 5}, LabelStyle -> (FontTracking -> ft)], {ft, {"Narrow", "Extended"}}]

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