Artie obtains his father's will from the safety deposit box at the bank the day after his father dies. It is the only copy of the will. Artie plans to consult an attorney regarding probate. As he hopes for a ton of cash, he steams the envelope and reads the will. His brother, Bennie, has been given more cash than he. Artie skillfully alters the "3" in the will to read "8", so that he receives $80,000 instead of $30,000. The offense is _________.