The table below contains a few exemplifying kerning pairs and their values.
Connected with this is a kerning program which calculates kerning values at 100 pairs per second.
The kerning units for a given font are the same as the units used to express the character widths in that font.
Most systems with typographic features today provide this type of kerning.
The user can change the kerning value in existing pairs, or add new pairs.
It allows for a variety of rendering rules, including ligatures, glyph substitution, glyph insertion, glyph rearrangement, anchoring diacritics, kerning, and justification.
Every printing of every book corrects numerous small blemishes, ranging from color registration to kerning and hinting.
Some fonts include up to 4000 built-in kerning pairs.