User`s manual

Conversion Process
53
Font family metrics:
Calculate values
automatically
If this radio button is checked, TransType will
automatically calculate vertical metrics for the
destination family. You cannot edit global family metrics
manually in this case
Use custom values
If this radio button is checked, you get access to the
following fields to change them. Edit family vertical
metrics only if you know what you are doing and
understand the purpose well
Ascent
The maximum height above the baseline reached by
characters in this family fonts
Descent
The maximum depth below the baseline reached by
characters in this family fonts. The depth is usually a
negative number
Leading
Maximum leading for the family. The leading value is
usually set to zero
MaxWidth
Maximum character width for the family