FontInfo
FontInfo structure
#include <Quickdraw.h>
typedef struct { Size Offset Description
short ascent; 2 0 Height above base line
short descent; 2 2 Depth below base line
short widMax; 2 4 Width of widest character in the font
short leading; 2 8 Distance between lines
} FontInfo; 10

Notes: The FontInfo structure is used in calls to GetFontInfo.
When calculating where to start drawing the next line of a series, call
GetFontInfo and add ascent + descent + leading. Add the sum to the
current vertical coordinate.
The word "leading" is pronounced like "bedding" and derives from the ancient
method of setting type in blocks of lead (Pb).