I noticed this morning that PHI and PHM have something which PHE doesn't: the text of Hypothetica (Hyp) and On Providence: Fragment I and II (a.k.a. De providentia [Prv]); this may be the case with other Philo texts, but I haven't bothered to dig and find out. These texts are in the updated edition of Philo published by Hendrickson. I assume they are not in PHE since this is based on the original Yonge edition, which is in the public domain. Is anyone able to confirm that I am correct on this? I don't have an older edition of Yonge to look at.