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Re: dimension based checksums
You caught a typo (read 1 not 0). Now reread the
In particular, if you agree that:
> It wouldn't make sense to replace an existing dimension.
(namely pure number fontdimen 1) then the approach I
sketched is the only one I know.
PS. Incidentally I was slightly exagerating the simplicity of
extracting an pure integer checksum from dimensions,
but the idea is OK.