User Guide

Editing Font Metrics
431
Class Definition
Every class is defined as a list of glyph names preceded by the class name:
_kern105: scircumflex' scaron
Kerning class names must begin with the underscore glyph – this is
necessary to distinguish them from the “plain” classes used in OpenType.
The class definition appears in the bottom part of the panel and you can
edit it to add or remove glyphs. After you make changes, click the
ENTER
key on the keyboard or the Accept button and the preview panel will show the
list of glyphs that are named in the class and can be found in the current font.