<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
line-height:normal;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
margin-top:0in;
margin-right:0in;
margin-bottom:10.0pt;
margin-left:0in;
line-height:115%;
font-size:12.0pt;
font-family:"Calibri","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Here is our proposal for addressing this DR.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p style='margin-left:.5in'>Update Part 2, §9.3, “Relationships”, last paragraph, as follows<o:p></o:p></p><p class=MsoNormal style='margin-left:1.0in'>Relationships provide a second important function: relating parts without modifying their content. <s><span style='color:red'>Sometimes relationships</span></s><span style='color:red'> </span><u><span style='color:blue'>Relationships may</span></u><span style='color:#558ED5'> </span><s><span style='color:red'>act as a label where</span></s><span style='color:red'> </span><u><span style='color:blue'>identify</span></u><span style='color:#558ED5'> </span>the content type of the labeled part <u><span style='color:blue'>when that part</span></u><span style='color:#558ED5'> </span>does not define a way to attach the given information. Some scenarios require information to be attached to an existing part without modifying that part, either because the part is encrypted and cannot be decrypted, or because it is digitally signed and changing it would invalidate the signature. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>See attached for additional context for this response.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>shawn<o:p></o:p></p></div></body></html>