<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Thanks, Vince. That’s pretty much what I wanted to say. I don’t know if schemas can apply xml:lang to an attribute in all XML documents guided by the schema. I don’t think that would make sense. I am not arguing a position, because I have not studied.<div><br></div><div>I’ve had problems with namespaced attribute names in the past. I suggest we go through a thorough test after any updates to X3DUOM.</div><div><br></div><div>John</div><div><br><div dir="ltr">Sent from my iPad</div><div dir="ltr"><br><blockquote type="cite">On Nov 16, 2021, at 6:24 PM, vmarchetti@kshell.com wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Nov 16, 2021, at 6:00 PM, Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" class="">brutzman@nps.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Monaco; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">XML allows identification of language via the reserved xml:lang attribute on any attribute.<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><ul type="disc" style="margin-bottom: 0in; margin-top: 0in;" class=""><li class="MsoListParagraph" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;">XML Recommendation, fifth edition, W3C, section2.12 Language Identification<o:p class=""></o:p></li><li class="MsoListParagraph" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;"><a href="https://www.w3.org/TR/REC-xml/#sec-lang-tag" style="color: rgb(5, 99, 193); text-decoration: underline;" class="">https://www.w3.org/TR/REC-xml/#sec-lang-tag</a><o:p class=""></o:p></li></ul><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">and<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><ul type="disc" style="margin-bottom: 0in; margin-top: 0in;" class=""><li class="MsoListParagraph" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;">W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes, W3C Recommendation 5 April 2012 section 3.4.3 language<o:p class=""></o:p></li><li class="MsoListParagraph" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;"><a href="https://www.w3.org/TR/xmlschema11-2/#language" style="color: rgb(5, 99, 193); text-decoration: underline;" class="">https://www.w3.org/TR/xmlschema11-2/#language</a><o:p class=""></o:p></li></ul><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""></div></div></div></blockquote><div><br class=""></div><div>These excerpts from the XML documents assert that the xml:lang attribute is not as granular as applying to individual attributes, but applies at</div><div>the XML element level, and so to all the attributes and subelements , with some clear rules for overriding the xml:lang attribute in sub-elements.</div><div><br class=""></div><div>With that in mind, I think that the function of the xml:lang attribute can, in the X3D abstract specification, be performed by a MetadataString node which can be applied to any X3D node, including</div><div>other Metadata nodes. The advantage of this approach would be that the language attribution can be readily transferred between different encodings of the same X3D content.</div><div><br class=""></div><div><br class=""></div><div><br class=""></div><br class=""><blockquote type="cite" class=""><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Monaco; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Today while working on XMP metadata transcription from RDF/XML (or TTL) form into X3D/XML form, Jakub and I found that we needed to utilize xml:lang attribute for lossless two-way conversion.<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I can think of the following X3D elements that might need to indicate which identification of human language might be appropriate:<o:p class=""></o:p></div><ul type="disc" style="margin-bottom: 0in; margin-top: 0in;" class=""><li class="MsoListParagraph" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;">Text node (corresponding to ‘string’ field)<o:p class=""></o:p></li><li class="MsoListParagraph" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;">MetadataString<o:p class=""></o:p></li><li class="MsoListParagraph" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;"><field> and <fieldValue> declarations, if type is SFString/MFString<o:p class=""></o:p></li></ul><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Conceivably we might also permit this whenever a description field is present also (Viewpoint, sensors, etc.).<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Not looking to change X3D expressive power but think that xml:lang information ought to be permissible in X3D XML encoding since it is an allowed part of XML.<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Thus am planning to add xml:lang as indicated above in the X3D XML Schema and X3D XML DOCTYPE to avoid incorrect, misleading validation errors.<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Any other considerations appropriate? Will enter Mantis issue when ready to proceed. All comments welcome.<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 10pt; font-family: "Courier New";" class=""><o:p class=""> </o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 10pt; font-family: "Courier New";" class="">all the best, Don<o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 10pt; font-family: "Courier New";" class="">--<span class="Apple-converted-space"> </span><o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 10pt; font-family: "Courier New";" class="">Don Brutzman Naval Postgraduate School, Code USW/Br <span class="Apple-converted-space"> </span><a href="mailto:brutzman@nps.edu" style="color: rgb(5, 99, 193); text-decoration: underline;" class="">brutzman@nps.edu</a><o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 10pt; font-family: "Courier New";" class="">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 10pt; font-family: "Courier New";" class="">X3D graphics, virtual worlds, navy robotics https://</span><span class="Apple-converted-space"> </span><span style="font-size: 10pt; font-family: "Courier New";" class=""><a href="http://faculty.nps.edu/brutzman" style="color: rgb(5, 99, 193); text-decoration: underline;" class="">faculty.nps.edu/brutzman</a><o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><span style="caret-color: rgb(0, 0, 0); font-family: Monaco; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; 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