<div dir="ltr"><div>Dear Aaron,</div><div> What you are thinking of are called variants. You will find the CIF style of variants in the imgCIF dictionary. The NeXus style <br></div><div>which is intended to fill the same role is Mark Koenecke's proposal in <br></div><div><br></div><div><a href="http://lists.nexusformat.org/pipermail/nexus-committee/2019/000905.html">http://lists.nexusformat.org/pipermail/nexus-committee/2019/000905.html</a></div><div><br></div><div> Regards,</div><div> Herbert<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 31, 2020 at 8:40 PM Aaron Brewster <<a href="mailto:asbrewster@lbl.gov">asbrewster@lbl.gov</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"><div dir="ltr">Hi all, I recall there was a way in NeXus to mark a group or field in an existing NeXus file as old/deprecated and add a new one replacing it. For example if you refined a detector position and you want to remember what the old position was, but any software reading the file should use the new position. Can this be done? My googling on the website didn't find it.<div><br></div><div>Thanks,</div><div>-Aaron</div></div>
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