Please explain this sentence for me!
Hello, I saw this sentence in a video game and it was "while the nature of his abrupt mental breakdown remains unknown, we do know he was clad only in his socks and rumored to be in possession of Emperor Mengsk's manifesto and a pound of peanut butter". I dont quite understand the sentence "in posession of Mengsk's manifesto". Does it mean the person has a video, or book, or speech record of the manifesto?
Thanks for your reply!