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<p class="MsoNormal">Dear All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Following the discussion in the previous conference call, please find attached the response of IP on U+02BC for inclusion in the root zone LGR to Cyrillic GP query:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">===========<o:p></o:p></p>
<p class="MsoPlainText"><span lang="EN-US">While the Integration Panel understands the use cases for Modifier Letter Apostrophe (U+02BC) in Belarusian and Ukrainian, we are bound by the principles prescribed in the Procedure and RFC 6912. In the background
section of RFC 6912, the IAB has cited the code point as being problematic for the root zone:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> It is not clear that all code points permitted<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> under IDNA2008 that have a General_Category of Lo or Lm are<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> appropriate for a zone such as the root zone. To take but one<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> example, the code point U+02BC (MODIFIER LETTER APOSTROPHE) has a<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> General_Category of Lm. In practically every rendering (and we are<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> unaware of an exception), U+02BC is indistinguishable from U+2019<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> (RIGHT SINGLE QUOTATION MARK), which has a General_Category of Pf<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> (Final_Punctuation). U+02BC will also be read by large numbers of<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> people as being the same character as U+0027 (APOSTROPHE), which has<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> a General_Category of Po (Other_Punctuation), and some computer<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> systems may treat U+02BC as U+0027. U+02BC is PROTOCOL VALID<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> (PVALID) under IDNA2008 (see the IDNA Code Points document<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> [RFC5892]), whereas both other code points are DISALLOWED. So, to<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> begin with, it is plain that not every code point with a<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> General_Category of Ll, Lo, or Lm is consistent with the type of<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> conservatism principle discussed in Section 4.1 below or the previous<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> IAB recommendations.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">… <o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">Further, RFC 6912 made clear that:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> Public zones are, by definition, zones that are shared by different<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> groups of people. Therefore, any decision to permit a code point in<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> a public zone (including the root) should be as conservative as<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> practicable. Doubts should always be resolved in favor of rejecting<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> a code point for inclusion rather than in favor of including it, in<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> order to minimize risk.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">Given that the root zone necessitates a conservative LGR design, the code point cannot be included in the MSR.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">=============<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Sarmad<o:p></o:p></p>
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