That (quote from Hiram) 's a good example of the concerns I have about going further than the text probably justifies. Everything Hiram wrote there in that first sentence is probably correct as isolated statements (Epicurus advised making outlines; Philodemus was aware of that advice). But does that really mean anything in regard to whether this particular text was an example of one of the good outlines? I think I recall reading that in fact surviving parts of this scroll of Philodemus was substantially devoted to his disputes with other Epicureans as to proper doctrine? (Again, keep me honest, Don, but I think I remember reading that about this scroll/book.)
Perhaps indeed this text is part of just the sort of conversation we have had here at the forum about personal outlines. Our context is to take the examples that people post and then "pick them apart" showing how they might be improved, while still noting the usefulness of the process of drafting the outline.. Without more context it's just not clear to me that we can be sure that this was an "approved" outline, or even possibly an example of an outline that is more harmful than helpful. It's possible that Philodemus would have been making much the same comment about this formulation as Charles himself has here -- illustrating both its merits and deficiencies. Without more context in the text it's just not possible to know with confidence.