freetypy.TT_OS2.x_avg_char_width

TT_OS2.x_avg_char_width

Specifies the arithmetic average of the advance width of all of the 26 lowercase letters of the Latin alphabet and the space character. If any of the 26 lowercase letters are not present, this parameter should equal zero.

This parameter is a descriptive attribute of the font that specifies the spacing of characters used for comparing one font to another for selection or substitution. For proportionally spaced fonts, this value is useful in estimating the length for lines of text.