- aalt
- Access All Alternates
- abvs
- Above-base Substitutions
- akhn
- Akhands
- blwf
- Below-base Forms
- calt
- Contextual Alternates
- case
- Case-Sensitive Forms
- ccmp
- Glyph Composition/Decomposition
- cjct
- Conjunct Forms
- dlig
- Discretionary Ligatures
- dnom
- Denominators
- frac
- Fractions
- half
- Half Forms
- liga
- Standard Ligatures
- locl
- Localized Forms
- nukt
- Nukta Forms
- numr
- Numerators
- ordn
- Ordinals
- pres
- Pre-base Substitutions
- rkrf
- Rakar Forms
- rlig
- Required Ligatures
- rphf
- Reph Forms
- salt
- Stylistic Alternates
- ss01
- Stylistic Set 1
- ss02
- Stylistic Set 2
- ss10
- Stylistic Set 10
- ss11
- Stylistic Set 11
- ss12
- Stylistic Set 12
- subs
- Subscript
- sups
- Superscript
- abvm
- Above-base Mark Positioning
- blwm
- Below-base Mark Positioning
- cpsp
- Capital Spacing
- dist
- dist
- kern
- Kerning
- mark
- Mark Positioning
- mkmk
- Mark to Mark Positioning