Meaning of TRACKING in English
< text > The spacing between characters in a line of text . This is defined when a font is designed but can often be altered in order to change the appearance of the text or for special effects.
Tracking should not be confused with kerning which deals with the spacing between certain pairs of characters.
See also leading .
FOLDOC computer English dictionary. Английский словарь по компьютерам FOLDOC. 2012