<p dir="ltr">On Mar 9, 2013 12:07 PM, "Khaled Hosny" <<a href="mailto:khaledhosny@eglug.org">khaledhosny@eglug.org</a>> wrote:<br>
><br>
> Hi All,<br>
><br>
> My understanding is that x/y_ppem are used for device tables<br>
> adjustments, but since I’m outputting to PDF files, I think I don’t<br>
> need/shouldn’t use such adjustments, what do you think?</p>
<p dir="ltr">Correct.  Think of setting each to nonzero as "enable hinting in this direction" kind of thing.<br>
> Regards,<br>
> Khaled<br>
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</p>