@Jellby
About
& #8239; -> Narrow no-break space.
" This char is also used in French before ";?!»" chars and after "«". "
As a French, this space entity interests me a lot of course. It's what we call or close to "
espace fine insécable". However I can see no way to use it for EPUB purposes. Sigil erases it immediately, ADE will probably flag it with a question mark as it did with
  (this last one at least is recognized by Sigil) )
It seems we need special software to handle this? But how can we expect to transfer it to ebook-readers which follow ADE specifications? This has always puzzled me.
Emulation, though possible, seems to be too cumbersome for these small animals.
texte<span class=*»fine*»>nbsp</span>texte
Related CSS*code:
.fine {font-size: 30%; }
If you could provide some more comments on this, I would be very interested.