This feature makes all variations of a selected character accessible. This serves several purposes: An application may not support the feature by which the desired glyph would normally be accessed; the user may need a glyph outside the context supported by the normal substitution, or the user may not know what feature produces the desired glyph. Since many-to-one substitutions are not covered, ligatures would not appear in this table unless they were variant forms of another ligature.

Replaces a sequence of glyphs with a single glyph, e.g. 'fi', 'fl'. This feature is enabled by default and cannot currently be disabled.

Replaces default alphabetic glyphs with the corresponding ordinal forms for use after figures.

Replaces the default forms with stylistic alternates. Note that there may be more than one stylistic alternate for a given character.

This feature maps upper- and lowercase letters to a mixed set of lowercase and small capital forms, resulting in a single case alphabet. If aligning to the x-height, smallcap glyphs may be substituted, or specially designed unicase forms might be used.