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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>This is in regards to the GB defect report. Our proposed response is as follows.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I agree with the guidance provided by GB and recommend their proposed changes. Here is the marked up text:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If a markup specification lacks such guidance, markup editors for markup documents governed by that markup specification should be conservative in their preservation behavior<b><u><span style='color:blue'>.</span></u></b> Before preserving any ignored markup, markup editors should attempt to establish confidence that the preserved markup will be acceptable to, and interpretable with acceptable semantics by, all imaginable markup consumers that understand future versions of extensions. [<span class=Non-normativeBracket>Note</span>: Such confidence could be established by deep understanding of the base specification. <span class=Non-normativeBracket>end note</span>] <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>