To create a recent post, editing in the HTML view, I had the scientific names of living things marked up thus `<span class="biota"><i class="bino
minal">Circus cyaneus</i></span>`, using the draft <a href="http://microformats.org
However, when I saved the post, the
class="binominal" disappeared, though
class="biota" remained. Attempts to re-add it fare no better.
Is there a reason for this; am I doing something, wrong, or is it a bug?