kCTUnderlinePatternDash
kCTUnderlinePatternDashDot
kCTUnderlinePatternDashDotDot
kCTUnderlinePatternDot
kCTUnderlinePatternSolid
kCTUnderlineStyleDouble
kCTUnderlineStyleNone
kCTUnderlineStyleSingle
kCTUnderlineStyleThick
kCTWritingDirectionEmbedding
kCTWritingDirectionOverride