Tagging image metadata inside a facsimile element about page2tei

[gabays]

I would put <graphic> in <sourceDoc>, because in some cases you would need to use @source. The original image, may it be referenced in <graphic> or @source, would therefore be in the same element <sourceDoc> rather than sometimes in <sourceDoc>, sometimes in <facsimile>. No? Cf.

<surfaceGrp xml:id="Epithalame1687_0004" type="page">
   <surface xml:id="Epithalame1687_0004_BT5_1"
      source="https://gallica.bnf.fr/iiif/ark:/12148/bpt6k57078011/f0004/330,1369,198,187/full/0/native"
      corresp="#BT5" ana="#decoNote"/>
      <zone xml:id="Epithalame1687_0004_BT2_2_LT1_1" corresp="#LT1"
         points="404 953 404 897 427 878 …"
         source="https://gallica.bnf.fr/iiif/ark:/12148/bpt6k57078011/f0004/402,878,1321,150/full/0/native">
         <path xml:id="Epithalame1687_0004_BT2_2_LT1_1_1" points="406 973 1725 978"/>
         <line>du texte</line>
      </zone>
</surfaceGrp>