MODECON /?
MODECON CODEPAGE
MODECON CODEPAGE PREPARE nnn <file.RAW>
MODECON CODEPAGE SELECT  nnn

MODECON: communicate with FreeDOS DISPLAY for codepage management

   CODEPAGE      Shows currently active codepage

   CODEPAGE PREPARE nnn <file.RAW>
                 Prepares codepage number nnn to be used. Information
                 is picked from <file.RAW>
                 (by default, you don't need to prepare codepage 858
                 Latin-1 multinlingual with EURO, equal to 850 but
                 adds EURO sign
   CODEPAGE SELECT  nnn
                 Makes codepage nnn active
                 You need to prepare a codepage before you can select it

CODEPAGE may be abbreviated by CP
PREPARE may be abbreviated by PREP
SELECT may be abbreviated by SEL