Used to indicate how well a font can represent a particular ISO 10646 character point for a particular script.
|0||Pango::COVERAGE_NONE||The character is not representable with the font.|
|1||Pango::COVERAGE_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.|
|2||Pango::COVERAGE_APPROXIMATE||The character is represented as basically the correct graphical form, but with a stylistic variant inappropriate for the current script.|
|3||Pango::COVERAGE_EXACT||The character is represented as the correct graphical form.|