Post #1831803

@quachpas dc certainly makes sense. And if I did it super properly if I end up in XML there's things like PROV as well Some brief experimentation showed that XMP metadata seems to be preserved for (otherwise untouched) images that have been inserted into Google Slides and OO Impress presentations and then exported back out (Google doesn't make it easy but I found a way) Obviously not to be relied on but a potentially useful backup in some cases.