<summary> Specifies the vertical offset from the vertical origin to the top of the black box. Thus, a positive value adds whitespace whereas a negative value means the glyph overhangs the top of the layout box. </summary>
See Implementation
<summary> Specifies the vertical offset from the vertical origin to the top of the black box. Thus, a positive value adds whitespace whereas a negative value means the glyph overhangs the top of the layout box. </summary>