Chapter 3: Typography in Web Design – Kerning, Tracking, Baseline, Leading.  

Kerning/Mortising, Negative/Positive Spacing-Tracking Kerning-also known as mortising, adjusts character spacing in proportional fonts for an aesthetically pleasing result. This is achieved via moving the letters closer together, otherwise referred to as negative spacing. Tracking or positive spacing on the other hand, moves the letters further apart. When a font is kerned correctly, the area of the two-dimensional blank spaces between each pair […]