1) Circles and Triangles must be enlarged slightly in order to appear as large as squares
2) Mathematical horizontal divisions within type lead to letters appearing to be top heavy, and therefore the dividing line within letters should lie above the mathematical centre (optical alignment > mathematical alignment)
3) Horizontal lines appear heavier than vertical lines and should be drawn narrower to acquire balance. Right leaning diagonals need to be broader.
4) Small types = proportionally wider than larger sizes.
"False" italics should not be greater than 10 Degrees in order to maintain order and prevent distortions.
Light is the brightness of the unprinted surface and bears more weight above the letters rather than below. Therefore n should be wider than u, the space between I and A must be smaller than that between I and V etc.