Toy left UCB sometime before 1984 and took a consulting position with Olivetti, an Italian typewriter company that at the time were starting development of their own computer based on the IBM Personal Computer (IBM PC) operating system. There, he met one of Olivetti's computer system administrators, Jon Lane. Lane had previously seen the popularity of "Rogue" among the United States location he managed and had played the game himself along with Ritchie's observations on "Rogue". Upon meeting Toy, Lane proposed the idea of porting "Rogue" to the IBM PC as a commercial product, which Toy agreed. They founded the company A.I. Design to port and market the game. Though Toy's source code was necessary for the porting, Lane had to redevelop many of the routines for the game's interface. Lane took advantage of the more graphical Code page 437 character set on PC to expand the number of symbols to represent the dungeon, such as using a happy-face codice_7 for the player-character. They also took steps to avoid potential copyright issues with TSR, the company that owned "Dungeons & Dragons" at that time, by changing the names of monsters like kobolds that were unique to that game.