public void PrepareForEditing()
{
if (!_haveDoneUpdate)
{
BringBookUpToDate(OurHtmlDom, new NullProgress());
_haveDoneUpdate = true;
}
//We could re-enable RebuildXMatter() here later, so that we get this nice refresh each time.
//But currently this does some really slow image compression: RebuildXMatter(RawDom);
UpdateEditableAreasOfElement(OurHtmlDom);
}