Citizen Systems PPU-231II - Manual (Page 32)

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ESC ? n
[Function] Deleting download characters
[Code] <1B>H<3F>H<n>
[Range] 32 n 126
[Outline] Deletes the downloaded characters of specified code.
[Caution] • The character “n” indicates the character code used to delete
the defined pattern. After the deletion, characters are printed
in the same pattern as the internal characters.
• This command deletes the code-defined pattern of the
character font selected by ESC !.
• This command is ignored if the specified character code is
undefined.
[See Also] ESC &, ESC %