FFaalt=Access all alternates
FFcalt=Contextual alternates
FFsalt=Stylistic alternates
FFliga=Standard ligatures
FFclig=Contextual ligatures
FFdlig=Discretionary ligatures
FFhist=Historical forms
FFhlig=Historical ligatures
FFunic=Unicase
FFsmcp=Small capitals
FFc2sc=Small capitals from capitals
FFc2pc=Petite capitals from capitals
FFpcap=Petite capitals
FFcase=Case sensitive forms
FFcpsp=Capital spacing
FFtitl=Titling
FFswsh=Swash
FFcswh=Contextual swash
FFfrac=Fractions
FFafrc=Alternative fractions
FFordn=Ordinals
FFnumr=Numerators
FFdnom=Denominators
FFsinf=Scientific inferiors
FFsups=Superscript
FFsubs=Subscript
FFonum=Oldstyle figures
FFlnum=Lining Figures
FFpnum=Proportional figures
FFtnum=Tabular figures
FFzero=Slashed zero
FFmgrk=Mathematical greek
FFnalt=Alternate annotation forms
FFornm=Ornaments
FFlocl=Localized forms
FFsize=Optical size
FFisol=Isolated forms
FFinit=Initial forms
FFmedi=Medial forms
FFfinal=Final forms
FFrlig=Requird ligatures
FFccmp=Glyph composition/decomposition
FFmark=Mark to base positioning
FFmkmj=Mark to mark positioning
FFhwid=Half widths