kCTBaselineClassAttributeName
kCTBaselineInfoAttributeName
kCTBaselineReferenceInfoAttributeName
kCTCharacterShapeAttributeName
kCTFontAttributeName
kCTForegroundColorAttributeName
kCTForegroundColorFromContextAttributeName
kCTGlyphInfoAttributeName
kCTKernAttributeName
kCTLanguageAttributeName
kCTLigatureAttributeName
kCTParagraphStyleAttributeName
kCTRunDelegateAttributeName
kCTStrokeColorAttributeName
kCTStrokeWidthAttributeName
kCTSuperscriptAttributeName
kCTUnderlineColorAttributeName
kCTUnderlineStyleAttributeName
kCTVerticalFormsAttributeName
kCTWritingDirectionAttributeName