Don't know if this is the right place for this, but it's the forum pointed to by Lucy so...
The lucy entry for Greater Healing - not the most exotic spell in the list - has an unknown hp calc as its effect:
Greater Healing
The other six or so spells with the same calc1 all appear to also be direct heals.
Edited, Wed May 18 07:30:09 2005 by Niccy