User Guide

FontLab 4
488
Editing Standard Stems
Standard stem widths are controlled through the Standard Stems page of
the Font Info dialog box:
Stem width controls are in the bottom part of this page:
There are controls for vertical and horizontal standard stem widths. All
available stems appear in the horizontal lists. You can select any stem just
as you would in normal, vertical list controls.
To add a stem to the list of the standard stems press
at the right
side of the stems' list.
To edit a standard stem width, select it using the left mouse button
and edit its value in the edit field to the right of the list.
To remove a stem from the list, select it and press the
button.
Note that FontLab will sort stem widths in ascending order when you close
the FontInfo dialog box.
StdHW, StdVW, StemSnapH and StemSnapV Parameters
From the Type 1 font specification you may know that in Type 1 fonts two types of standard stem
widths are used: Standard Width and Stem Snap Width. There is one standard width for each
direction and up to 10 stem snap values. In FontLab these values are united in the stem list. StdHW
and StdVW are taken from the first records in the stem lists. StemSnapH and StemSnapV records are
the remaining records in the stems' list.
Standard stem widths are also used in TrueType hinting.