Page "Kerning" Paragraph 11

The OpenType format adds the possibility to use class based kerning.

This approach makes it significantly easier to develop kerning for fonts which have a large number of glyphs.

Instead of specifying the kerning for ‘ Va ’ and ‘ Vá ' separately all diacritics with the base letter a are placed into a group and the kerning between V and this group is specified.

At the same time it is possible to add exceptions to the groups for example for ‘ Vā ’.

Group based kerning is supported in nearly all modern office and desktop publishing applications.