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<div>Vlad,</div>
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<div>If additional fields are added to the end of the OS/2 table, as is the case here, then yes the version number should be bumped since that’s the mechanism that’s been used in the OS/2 and for other minor version fields in OFF [OFF sec. 4.4 “Table version
numbers”].</div>
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<div>( Looking at the size of the table would be an alternate way to do things, though not as good of a way since it wouldn’t handle new information added to the table without the size being changed, e.g. flag bits being added to existing flag fields, where
the unset (reserved) needs to be distinguished from the unset (defined and unset) case. )</div>
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<div>Sairus</div>
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<span style="font-weight:bold">From: </span><'Levantovsky>, "Vladimir' <a href="mailto:vladimir.levantovsky@monotype.com">
vladimir.levantovsky@monotype.com</a> [mpeg-OTspec]" <<a href="mailto:mpeg-OTspec-noreply@yahoogroups.com">mpeg-OTspec-noreply@yahoogroups.com</a>><br>
<span style="font-weight:bold">Reply-To: </span>Vladimir Levantovsky <<a href="mailto:Vladimir.Levantovsky@monotype.com">Vladimir.Levantovsky@monotype.com</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday, July 9, 2014 at 5:28 AM<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:mpeg-OTspec@yahoogroups.com">mpeg-OTspec@yahoogroups.com</a>" <<a href="mailto:mpeg-OTspec@yahoogroups.com">mpeg-OTspec@yahoogroups.com</a>><br>
<span style="font-weight:bold">Subject: </span>[mpeg-OTspec] Draft text of DIS OFF standard [1 Attachment]<br>
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<p class="MsoNormal">Dear all,<o></o></p>
<p class="MsoNormal"><o> </o></p>
<p class="MsoNormal">Please see attached the draft text of the DIS version of the OFF (ISO/IEC 14496-22 3<sup>rd</sup> edition) with all the changes implemented and tracked. Please review the document and let me know by Friday morning if I missed anything.<o></o></p>
<p class="MsoNormal"><o> </o></p>
<p class="MsoNormal">I’d like to bring up one question related to most recent OS/2 changes – should we up the OS/2 version number?
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<p class="MsoNormal"><o> </o></p>
<p class="MsoNormal">We added two new data fields (usLowerOpticalPointSize and usUpperOpticalPointSize) in the end of the table. Technically, if we keep the OS/2 version number as is – this change should not affect any existing implementations since they will
stop reading the table data after the last known data field and two additional data fields will simply be ignored [and processed only by updated implementations]. However, I believe that while making similar changes in the past we did increase the OS/2 version
number – we need to decide if we want to do the same now, with the current changes in place.<o></o></p>
<p class="MsoNormal"><o> </o></p>
<p class="MsoNormal">Please respond to this email with your suggestions and comments.<o></o></p>
<p class="MsoNormal"><o> </o></p>
<p class="MsoNormal">Thank you,<o></o></p>
<p class="MsoNormal">Vladimir<o></o></p>
<p class="MsoNormal"><o> </o></p>
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