> Anybody know if there can be anything important happening after
> IUP[x] and IUP[y]?
Having deltas is quite common.
> Both instructions should mark the end of the fitting process afaik
> and I noticed that Microsoft's core fonts like to keep going after
> that and "fix" various things.
Hitchcock discusses this in his whitepaper, using the terms `pre-IUP'
and `post-IUP' deltas.
Werner
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