TransAct Ithaca 280 Programmer's Manual page 119

Programming Codes
Note 3: Use the [ESC] I <n> command to select two-pass rotated font.
The font selection must be made before the rotate command.
Note 4: Only enhanced and emphasized attributes are available for
formatted, rotated print. These attributes are not available on a character
basis. They affect all of the rotated text after the [ESC] r command.
Enhanced and emphasized attributes must be set before the [ESC] r
command is issued.
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280 Programmer's Guide
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