PangoCoverageLevel: @PANGO_COVERAGE_NONE: The character is not representable with the font. @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. @PANGO_COVERAGE_APPROXIMATE: The character is represented as basically the correct graphical form, but with a stylistic variant inappropriate for the current script. @PANGO_COVERAGE_EXACT: The character is represented as the correct graphical form.
PangoCoverage: