package flash.text.engine; extern class FontMetrics { function new(emBox : flash.geom.Rectangle, strikethroughPosition : Float, strikethroughThickness : Float, underlinePosition : Float, underlineThickness : Float, subscriptScale : Float, superscriptScale : Float) : Void; var emBox : flash.geom.Rectangle; var strikethroughPosition : Float; var strikethroughThickness : Float; var subscriptScale : Float; var superscriptScale : Float; var underlinePosition : Float; var underlineThickness : Float; }