OpenType Font Variations overview (OpenType 1.9.1) - TypographyVariation Data Variation data provides data that describes variation of particular font values over the variation space. For example, variation data in the 'gvar' table describes how glyph outlines in the 'glyf' table are transformed by specifying how individual points in a glyph outline get moved for different variation instances. Variation for a given font value is expressed as combinations of d
