The distance in pixels from the text baseline to the highest/upper grid coordinate used to place an outline point. Always a positive value.
This is an imaginary box that encloses all glyphs from the font, usually as tightly as possible.
The distance in pixels from the baseline to the lowest grid coordinate used to place an outline point. Always a negative value.
Text height in pixels.
The maximum horizontal advance (advance from the beginning of a character to the beginning of the next character) in pixels.
A virtual point, located on the baseline, used to locate glyphs.
Horizontal (x) and vertical (y) pixels per em.
Text width in pixels.
This is used to reprecent text/font mesurements.