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<div dir="ltr"><div>Hi,</div><div><br></div><div>At today's IPP WG call, we agreed unanimously to approve:</div><div><br></div><div>Major Issue 1: Move the proposed attributes (and the related use <br></div><div>cases) to IPP Job Extensions v2.0.</div><div><br></div><div>Major Issue 2: Remove entirely the strange (and poorly specified)</div><div>"reverse-order" document processing (which Mike has never seen</div><div>in the wild in printers surveyed in Apple labs).<br></div><div><br></div><div>Also to publish new IPP Production Printing Extensions (PPX)</div><div>as v2.0 (new major version) and create "ipp-features-supported" <br></div><div>keywords to group new attributes as CONDITIONALLY REQUIRED. <br></div><div>And (perhaps) to make some attributes simply REQUIRED or <br></div><div>RECOMMENDED. All for the purpose of minimizing OPTIONAL <br></div><div>attributes in PPX.</div><div><br></div><div>Cheers,</div><div>- Ira</div><div><br></div><div><br></div><div><div><div dir="ltr" class="m_-6713069724139252427gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Ira McDonald (Musician / Software Architect)<br>Co-Chair - TCG Trusted Mobility Solutions WG</div><div>Co-Chair - TCG Metadata Access Protocol SG<br></div><div dir="ltr">Chair - Linux Foundation Open Printing WG<br>Secretary - IEEE-ISTO Printer Working Group<br>Co-Chair - IEEE-ISTO PWG Internet Printing Protocol WG<br>IETF Designated Expert - IPP & Printer MIB<br>Blue Roof Music / High North Inc<br><a style="color:rgb(51,51,255)" href="http://sites.google.com/site/blueroofmusic" target="_blank">http://sites.google.com/site/blueroofmusic</a><br><a style="color:rgb(102,0,204)" href="http://sites.google.com/site/highnorthinc" target="_blank">http://sites.google.com/site/highnorthinc</a><br>mailto: <a href="mailto:blueroofmusic@gmail.com" target="_blank">blueroofmusic@gmail.com</a><br>PO Box 221 Grand Marais, MI 49839 906-494-2434<br><br><div style="display:inline"></div><div style="display:inline"></div><div style="display:inline"></div><div></div><div></div><div></div><div></div></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 1, 2019 at 1:00 PM Michael Sweet via ipp <<a href="mailto:ipp@pwg.org" target="_blank">ipp@pwg.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">All,<br>
<br>
I have posted an initial draft of an errata update of PWG 5100.3, renamed to "IPP Production Printing Extensions v1.1 (PPX)", to:<br>
<br>
<a href="https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippppx11-20190501.docx" rel="noreferrer" target="_blank">https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippppx11-20190501.docx</a><br>
<a href="https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippppx11-20190501.pdf" rel="noreferrer" target="_blank">https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippppx11-20190501.pdf</a><br>
<a href="https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippppx11-20190501-rev.pdf" rel="noreferrer" target="_blank">https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippppx11-20190501-rev.pdf</a><br>
<br>
This errata is intended to address:<br>
<br>
- Removal of references to the original page overrides spec (5100.4)<br>
- Removal and rewording of a lot of “implementation-defined” behavior<br>
- Removal of finishings-col which is now defined in PWG 5100.1-2017: IPP Finishings 2.1<br>
- Removal of new media values which are superseded by PWG 5101.1-2012: PWG Media Standardized Names v2.0<br>
- Obsoletion of the "current-page-order" Job attribute which got updated as the document data is transformed to reflect the new page order (IPP does not expose those sorts of things)<br>
- Obsoletion of the "user-defined-values-supported" Printer attribute as we now (properly) use the IANA IPP registry and well-defined extension semantics for keyword values<br>
- Updating of the defintion of the "imposition-template" Job Template attribute<br>
- Updating of the document template, adding missing sections, and updating references.<br>
<br>
Two major issues require discussion:<br>
<br>
1. There are a handful of attributes defined in 5100.3 that are not specific to production printing, most notably "media-col" but also "job-account-id", "job-acocunting-user-id", "job-sheets-col", and "presentation-direction-number-up". IMHO they should get moved to the IPP Job Extensions v2.0 update (which is currently in PWG Last Call) and then we can also make "media-col" required (right now everything is OPTIONAL)<br>
<br>
2. This specification tries to redefine how Input Pages are numbered in order to support "reverse order" document processing, and that adds a HUGE amount of complexity and special casing that IMHO is totally unnecessary, and could lead to incorrect processing of Jobs by proxies (for example) in the newer infrastructure printing architectures. I would like to obsolete the "page-order-received" Job Template attribute and all of the "n-to-1-order" semantics in the original 5100.3 so that we don't have those special cases and focus on well-defined semantics and interoperability.<br>
<br>
_________________________________________________________<br>
Michael Sweet, Senior Printing System Engineer<br>
<br>
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</blockquote></div></div>