<summary> Bottom edge of accumulated bounding blackbox of all glyphs in the font. </summary>
<summary> Left edge of accumulated bounding blackbox of all glyphs in the font. </summary>
<summary> Right edge of accumulated bounding blackbox of all glyphs in the font. </summary>
<summary> Top edge of accumulated bounding blackbox of all glyphs in the font. </summary>
<summary> Indicates that the ascent, descent, and lineGap are based on newer 'typographic' values in the font, rather than legacy values. </summary>
<summary> Horizontal position of the subscript relative to the baseline origin. This is typically negative (to the left) in italic/oblique fonts, and zero in regular fonts. </summary>
<summary> Vertical position of the subscript relative to the baseline. This is typically negative. </summary>
<summary> Horizontal size of the subscript em box in design units, used to scale the simulated subscript relative to the full em box size. This the numerator of the scaling ratio where denominator is the design units per em. If this member is zero, the font does not specify a scale factor, and the client should use its own policy. </summary>
<summary> Vertical size of the subscript em box in design units, used to scale the simulated subscript relative to the full em box size. This the numerator of the scaling ratio where denominator is the design units per em. If this member is zero, the font does not specify a scale factor, and the client should use its own policy. </summary>
<summary> Horizontal position of the superscript relative to the baseline origin. This is typically positive (to the right) in italic/oblique fonts, and zero in regular fonts. </summary>
<summary> Vertical position of the superscript relative to the baseline. This is typically positive. </summary>
<summary> Horizontal size of the superscript em box in design units, used to scale the simulated superscript relative to the full em box size. This the numerator of the scaling ratio where denominator is the design units per em. If this member is zero, the font does not specify a scale factor, and the client should use its own policy. </summary>
<summary> Vertical size of the superscript em box in design units, used to scale the simulated superscript relative to the full em box size. This the numerator of the scaling ratio where denominator is the design units per em. If this member is zero, the font does not specify a scale factor, and the client should use its own policy. </summary>