Pity
I thought the rules in the first section could signal the punctuation marks as independent and not to be counted for hyphenation, but it wasn't working for me as it was and I'm not sure that just because they're there they're correct (someone could have added them tentatively?). I gathered that the 1 means a possible hyphenation point but it wouldn't make sense there.
Is there some provedly good italian hyph file? Maybe mine is not the best. Thanks for answering anyhow.