Bare-bones support for pic:pic, just in case we ever need it.
Figure 2.
Remove a hack no longer needed.
Fix for intl, regressed by recent changes.
Remove some macro text. (Norbert changed transform.py to leave {SEQ} macro instruction text in the HTML, but changing it back does not affect intl. I guess I must have obsoleted it at some point. Anyway, good riddance.