calt
Contextual alternates: Depending on the surrounding context, different glyphs are used. Enabled by default
dlig
Discretionary Ligatures: Disabled by default
tnum
Tabular numbers: Fixed-width numbers are useful for tabular data, where comparing columns across rows is desired.
frac
Fractions: Convert spans of numbers & forward slash into fractions
case
Case alternates: Alternate glyphs that matches capital letters and numbers
ccmp
Compositions: Custom-made glyphs for compositions. Enabled by default
sinf
Scientific inferiors: Same as Subscript
ss02
Disambiguation: Alternate glyph set that increases visual difference between similar-looking characters.
