Brother HL-7050N - Manual (Page 212)

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HL7050_US_UG_FM5.5
Symbol and character sets
For the HP LaserJet, EPSON FX-850, and IBM Proprinter XL
emulation modes, you can select the symbol and character sets in
the PRINT MENU. See About emulation modes in Chapter 3.
If you have chosen the HP-GL emulation menu, you can choose the
standard or alternate character set in the PRINT MENU. See PRINT
MENU, Chapter 3.
OCR symbol Sets
When you choose the OCR-A or OCR-B font, the matching symbol
set is always used.