User Guide

FontLab 4
622
Choosing Dynamic Range
When you define a design axis you should choose the proper edge design
coordinates and dynamic range for it. It is important to make your font
compatible with Multiple Master fonts made by other manufacturers.
Dynamic range is not so important for the Style axis because there is no
standard for it and it is relatively easy to set the dynamic range for Optical
Size because it is usually known for this axis. So we have the Weight and
Width axes to choose dynamic ranges for.
As you know, the dynamic range is the distance between the lowest and
highest design coordinates, so all you have to do is to choose the proper
low and high edge values.
The best way to choose these values is to compare your font with a font that
already has these values assigned properly. We recommend you use one of
Adobe’s fonts for this comparison.
Another recommendation is to choose edge values so that the design
coordinate of the Normal style (normal weight and normal width) of the
font will be 500-600 units.