User Guide

Hinting
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Li nk s
Links are the most important visual commands. They are used to set
relationships between outline points and to set distances between points to
one of the standard stem values.
There are two types of links: single links and double links. Single links need
to have a base point that is set by a previous command. This can be any
command except a final delta.
A double link does not need to have base points. It sets the position of two
points and they can be used as base points for a single link or interpolate
command.