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<p class="MsoBodyText"><span style="font-size: 10pt;">-
application/font-off – to
be used as a generic font type that identifies a font resource
compliant with
ISO OFF / OpenType format (identified by .otf extension);</span></p>
</blockquote>
<br>
a) Does this imply that OFF fonts MUST NOT have .ttf extension? I
was unaware of that.<br>
<br>
b) I would like to re-visit the issue raised earlier (5 April) by
Sairus Patel regarding the definition of "compliance with ISO OFF".
In particular, unless ISO 14496-22 specifically prohibits a font
from including of any sfnt table tags other than those listed within
the spec (and I don't think it does, but maybe I'm wrong), then one
cannot say that, for example, a font is not compliant just because
it contains AAT or Graphite tables. <br>
<br>
Now if we want to define "application/font-off" as being constrained
to OFF fonts that contain only those sfnt table tags as defined in
the spec, then we can certainly do that -- we just cannot couch that
constraint simply in terms of "compliance" with the spec. For
example, we could say something like:<br>
<br>
- application/font-off – to be used as a generic font type that
identifies a font resource compliant with ISO OFF / OpenType format
and which contains only sfnt tables documented by the OFF
specification<br>
<br>
Regards,<br>
<br>
Bob Hallissy<br>
SIL International<br>
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