[Serna] Feature request - copy/paste from external applications

When copying/pasting formatted content into Serna (e.g., from a web browser, or
from Word), Serna seems to just dump it all as text, without any tags at all.  

I've used some other editors that seem to have more intelligence when pasting --
for example, it's no problem to copy a table from Firefox and paste it into a
DITA topic, and preserve all the table formatting.

Can Serna already do that, but I just haven't turned on the right preferences or
something?

Thanks!
Seraphim