| Class | Description | |
|---|---|---|
 | CodeRange | Represents range of character codes. |
| CodeRanges | Represents collection of unique CodeRange objects. All CodeRange objects within collection not intersect and sorted by First field. |
| FontBuilder | The font subset builder. |
| FontKey | Unique identifier of font in various font processing algorithms of C1Preview: - font substitution - font embedding |
| FontShaping | Class for support character shaping (Arabic, Indic etc.). |
| FontSubSet | The font object for build subsets. |
| FontSubSet.BigEndianBinaryReader | TTF files are stored in big-endian format, we need special readers and writers |
| FontSubSet.BigEndianBinaryWriter | Big endian binary writer. |
| FontSubSet.CharacterVariantParams | The parameters table for the Character Variant features. |
| FontSubSet.FeatureParams | Base class for the Feature Parameters tables. |
| FontSubSet.FeatureTable | Provides information about how to use the glyphs in a font to render a script or language. |
| FontSubSet.FontFeature | Identifies the typographic feature in the OpenType font. |
| FontSubSet.KernSubtable | Contains information for vertical or horizontal text, and can contain kerning values or minimum values. |
| FontSubSet.Ligature | Define the glyphs in each ligature. |
| FontSubSet.StylisticSetParams | The parameters table for the Stylistic Set features. |
| FontSubSet.ValueRecord | Defines any combination of X and Y values (in design units) to add to the placement and advance values provided in the font. |
| GlyphInfo | Contains index of the glyph and its mapping to the corresponding code point. |
| RawFontSubSet | Raw (binary font data or file path name) font subset. |
