1 aalt Access All Alternates
2 afrc Alternative Fractions
3 ccmp Glyph Composition/Decomposition
4 dlig Discretionary Ligatures
9 halt Alternate Half Widths
10 hkna Horizontal Kana Alternates
11 hojo <unknown feature>
18 liga Standard Ligatures
19 nalt Alternate Annotation Forms
22 palt Proportional Alternate Widths
23 pkna <unknown feature>
24 pwid Proportional Widths
26 ruby Ruby Notation Forms
27 sinf Scientific Inferiors
30 trad Traditional Forms
33 vhal Alternate Vertical Half Metrics
34 vkna Vertical Kana Alternates
36 vpal Proportional Alternate Vertical Metrics
37 vrt2 Vertical Alternates and Rotation