Glossary for Geospatial Science

high-order characters:� Characters in a computer�s 8-bit character set above the standard 128 ASCII characters.� High-order characters (also called �extended� characters) are numbered 128-255, and most PC�s use the IBM extended character encoding scheme (also called the PC-8 character encoding scheme) for screen display of the high-order characters.

The mapping of the high-order characters to the text-mode character encoding scheme of a particular printer is not standard.� In order to see what characters a printer provides for the high-order characters, consult the printer�s documentation or generate your own test page.� In some application software, in order to get a printer to generate a particular character, you may have to use a different character on the screen.