Is not installed in the computer system. Mac is a series of personal computer products launched by Apple, which are designed, developed and sold by Apple. The first Mac was released on June 24th, 1984+65438, which was initially positioned in the professional market of family, education and creativity. Ppt in mac is not italicized because it is not installed in the computer system. MacOS system is the second computer that uses graphical user interface after LISA, and it is also the first computer product that widely uses graphical user interface in personal computers.