Just to be sure, I tried to use the Add File-function instead of the File Open, and found, that they do NOT work the same way. In the (x)html file, I have metadata like this (sample):
<meta content="Mrs. Lirripers værelser" name="DC.title" />
<meta content="Dickens, Charles" name="DC.creator.aut" />
<meta content="2012-03-05" name="DC.date.publication" scheme="ISO8601" />
<meta content="978-87-7979-237-1" name="DC.identifier.ISBN" />
<meta content="eBibliotek 1800" name="DC.publisher" />
<meta content="eBibliotek 1800" name="DC.rights" />
<meta content="Kim N. Jensen" name="DC.contributor.edt" />
<meta content="Foreligger ikke oplyst i forlæg (ant. Ludvig Moltke, 1805-1872)" name="DC.contributor.trl" />
which loads nicely into the epub's metadata, when using File Open, but *not* when using rightclick and Add File.
Also, I have the frontpage as (sample)
<div class="svg_outer">
<div class="svg_inner">
<svg xmlns="http://www.w3.org/2000/svg" height="100%" preserveAspectRatio="xMidYMid meet" version="1.1" viewBox="0 0 600 800" width="100%" xmlns:xlink="http://www.w3.org/1999/xlink">
<image height="800" width="600" xlink:href="dickens-mrs_lirripers_verelser_STOR.jpg"></image>
</svg>
</div>
</div>
which loads the imagefile nicely as well when using File Open, but *not* when rightclickling "Text" and Add file. (Well, the imagefile is loaded, but not shown. It seems, that the File Open procedure corrects the internal links to the css and imagefiles, and the rightclick and Add-file leaves them as-is)
So, as someone else said, it a'int broke, so dont fix it
Regards,
Kim