A font that uses the extended ASCII characters as defined by IBM for the original PC. The OEM or DOS/OEM character set contains line draw and other symbols commonly used by DOS programs to create charts and simple graphics. Also known as the PC-8 symbol set as well as Code Page 437, the OEM character set is built into every graphics card. It is also the character set used by Windows in order to display DOS applications properly. See ASCII chart for the actual characters.