Scalable outline fonts as we use them today became widely available with the introduction of PostScript and PostScript-enabled printers in the middle of the 1980s. But the high-quality output was only created on the printer itself. Screens and printers without PostScript support continued to use bitmap fonts. Mac OS didn’t gain native support for scalable fonts until the introduction of TrueType in Mac OS 7 in 1991. In order to render PostScript fonts from the actual outline on screen or to print them on printers without PostScript support, Adobe released the Adobe Type Manager product.