User Guide

FontLab 4
492
S t e m Hi n t P r o g r a m m i n g
Now that you know everything about font-level hinting and know how to
set and edit stem hints (from the “Glyph Window” chapter). It’s time to
talk about hint programming.
The Type 1 hinting system requires that stem hints not overlap each other.
Because stem widths have no length limits and are applied to the whole
character, sometimes it is necessary to give special instructions to hints in
order to avoid such overlaps:
Overlapped hints
In the left picture we have two vertical overlapping hints and in the right
picture two pairs of horizontal overlapping hints.