<summary> Horizontal offset of the caret along the baseline for good appearance. Offset = 0 for perfectly upright fonts (non-italic). </summary>
<summary> Vertical rise of the caret. Rise / Run yields the caret angle. Rise = 1 for perfectly upright fonts (non-italic). </summary>
<summary> Horizontal run of th caret. Rise / Run yields the caret angle. Run = 0 for perfectly upright fonts (non-italic). </summary>
<summary> Metrics for caret placement in a font. </summary>