Use
The default OEM code page can be changed by changing the system wide locale and rebooting. This also changes the raster font available to the console. The active OEM code page can be changed by the MS-DOS chcp command, but this will not display correctly unless you switch from the default raster font to Lucida Console. Raster fonts do not support non-system-wide changing of the code page.
Windows alt codes can be used to input characters from the OEM or ANSI code pages. This is useful for the characters that not available on your keyboard. However, when using MS-DOS, if a character requested from the ANSI code page does not exist in the OEM code page, then a best-fit translation automatically occurs. When using a raster font, the result of the best-fit translation is displayed. When using Lucida Console, the character prior to the best-fit translation is displayed, but the translated byte is actually received by the application. Hence, using the ANSI alt codes in MS-DOS is error prone when the OEM code page does not support all characters in the ANSI code page.
Prior to Windows Vista, the active console code page can be changed programatically, but the console font cannot. So if the console is in the default configuration (using raster fonts), then programatic changing of the code page is not useful for console applications because incorrect characters will be displayed to the user.
Read more about this topic: Code Pages On Microsoft Windows
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