<summary> Specifies the X offset from the right edge of the black box to the origin of the next glyph when writing horizontally. The value is negative when the right edge of the black box overhangs the layout box. </summary>
See Implementation
<summary> Specifies the X offset from the right edge of the black box to the origin of the next glyph when writing horizontally. The value is negative when the right edge of the black box overhangs the layout box. </summary>