Format - style

A style definition consists of:

a floating point value for the horizontal alignment.
a floating point value for the vertical alignment.
a floating point value for the font width.
a floating point value for the font height.
a floating point value for the left margin.
a floating point value for the top margin.
a floating point value for the right margin.
a floating point value for the bottom margin.
a color, being the text color.
a color, being the background color.
a color, being the draw color.
8 bits being the metric for the font width and height.
8 bits being the metric for the margin