If this diary belonged to my great-grandfather, it means that he was a partisan! I heard about this word in school. Surely we are in the period of World War II when fascism was being fought in Italy. In the diary I read: Giuseppe Bacciagaluppi, head of the intelligence services. Absolute obligation to monitor telephones, newspapers and radios. Today watch out for Radio London: coded message for supplies and ammunition. I really think that behind these drawings is the cipher phrase that was being broadcast from the radio to help the partisans.