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<p class="MsoNormal"><span style="font-size:11.0pt">Hi Mario,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">You just mentioned that you thought the word "substantive" did not appear in the CCSDS YB.  But it does, in sec 6.2.5.2 (emphasis
<b><i>added</i></b>):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><b><span style="font-size:11.0pt">6.2.5 FORMAL AGENCY REVIEW
</span></b><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt">6.2.5.2 Once review of a document has been authorized, that document may be reviewed more than once without additional polling of the CMC:
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-size:11.0pt"><span style="mso-list:Ignore">.<span style="font:7.0pt "Times New Roman"">         
</span></span></span><![endif]><span style="font-size:11.0pt">c)  <b><i>if substantive changes are made</i></b> to a document that has completed review without technical comment, the Secretariat shall conduct a final review in which Agencies can approve or
 reject the document but may not suggest additional changes; </span><span style="font-size:11.0pt;font-family:"MS Mincho"">
</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">As with most words in the English language that are used in our documents, but not specifically defined, we depend on common usage in English to define meanings.  In this case we can refer to one or more dictionary
 definitions for this "common usage".  Try these:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><u><span style="font-size:11.0pt">Google primary definition<o:p></o:p></span></u></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt">sub·stan·tive<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt">adjective</span></i><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt">adjective:
<b>substantive</b><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in;text-indent:-.25in;mso-list:l1 level1 lfo2">
<![if !supportLists]><span style="font-size:11.0pt"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">      
</span></span></span><![endif]><span style="font-size:11.0pt">having a firm basis in reality and therefore important, meaningful, or considerable.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.25in"><span style="font-size:11.0pt">"there is no substantive evidence for the efficacy of these drugs"<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><u><span style="font-size:11.0pt">Oxford dictionary definition<o:p></o:p></span></u></p>
<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:11.0pt">substantive<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:11.0pt">adjective<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:1.0in;text-indent:-.25in;mso-list:l2 level1 lfo3">
<![if !supportLists]><span style="font-size:10.0pt;font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]><span style="font-size:11.0pt">Having a firm basis in reality and so important, meaningful, or considerable.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt">‘there is no substantive evidence for the efficacy of these drugs’</span></i><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">There are also a few uses of "substantive change", but these tend to be organization / topic specific.  A couple that are relevant are these:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt">When you talk about substantive change, you mean change that really makes a difference.<o:p></o:p></span></i></p>
<p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt"><o:p> </o:p></span></i></p>
<p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt">Substantive change</span></i><span style="font-size:11.0pt"> is a significant modification or expansion in the nature and scope of an accredited institution<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">So this specific definition mentions "accredited organization", for us it could say "draft document", and that would have appropriate meaning in our context.  I think that these meanings are clear.  I hope
 you do as well.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Regards, Peter<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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