The GlyphPositioning interface is implemented by a glyph positioning subtable
that supports the determination of glyph positioning information based on script and
language of the corresponding character content.
The GlyphSubstitution interface is implemented by a glyph substitution subtable
that supports the determination of glyph substitution information based on script and
language of the corresponding character content.
The GlyphDefinitionSubtable implements an abstract base of a glyph definition subtable,
providing a default implementation of the GlyphDefinition interface.
The Anchor class implements a anchor record, comprising an X,Y coordinate pair,
an optional anchor point index (or -1), and optional X or Y device tables (or null if absent).
The DeviceTable class implements a positioning device table record, comprising
adjustments to be made to scaled design units according to the scaled size.
The Value class implements a positioning value record, comprising placement
and advancement information in X and Y axes, and optionally including device data used to
perform device (grid-fitted) specific fine grain adjustments.
The GlyphSubstitutionSubtable implements an abstract base of a glyph substitution subtable,
providing a default implementation of the GlyphSubstitution interface.
The Ligature class implements a ligature lookup result in terms of
a ligature glyph (code) and the N+1... components that comprise the ligature,
where the Nth component was consumed in the coverage table lookup mapping to
this ligature instance.
The ChainedClassSequenceRule class implements a subclass of ClassSequenceRule
that supports matching on a specific glyph class sequence in a specific chained contextual.
The ChainedCoverageSequenceRule class implements a subclass of CoverageSequenceRule
that supports matching on a specific glyph class sequence in a specific chained contextual.
The ChainedGlyphSequenceRule class implements a subclass of GlyphSequenceRule
that supports matching on a specific glyph sequence in a specific chained contextual.