Additionally, a random bit of errata trivia: in the Second print (and perhaps the First as well), the 5th level Cleric rank is "Perfect". Subsequent prints leave that rank blank.  All other ranks are present and identical between prints. (Note: contributor Chris Vermeers states that his Seventh print copy has the "Perfect" rank, though this is the only such copy so far reported).  One may wonder why this rank was removed -- perhaps because it was intended to be Prefect, and it was somehow easier to remove it than correct it.

Errata PHB