POE are in the rule book. The reason I came across #48 today is that the index lists bat throwing as #48, although it is really #51.
I don't necessarily need an unissued case book, especially with no explanation of the $10 or $15 versions difference (possibly a $1.99 binder), but we should see the exact wording of interpretations and cases we have to apply.
I forgot about the difference between not-sporting behavior and unsporting conduct.