aalt	Access All Alternates
dlig	Discretionary Ligatures
fwid	Full Widths
halt	Alternate Half Widths
hngl	Hangul
hwid	Half Widths
nalt	Alternate Annotation Forms
pwid	Proportional Widths
sinf	Scientific Inferiors
sups	Superscript
vert	Vertical Writing
vhal	Alternate Vertical Half Metrics
vrt2	Vertical Alternates and Rotation
