CoverageLevel: None: The character is not representable with the font. Fallback: The character is represented in a way that may be comprehensible but is not the correct graphical form. For instance, a Hangul character represented as a a sequence of Jamos, or a Latin transliteration of a Cyrillic word. Approximate: The character is represented as basically the correct graphical form, but with a stylistic variant inappropriate for the current script. Exact: The character is represented as the correct graphical form. * Used to indicate how well a font can represent a particular Unicode character point for a particular script.
PangoCoverage: * The #PangoCoverage structure represents a map from Unicode characters to #PangoCoverageLevel. It is an opaque structure with no public fields.