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Page B-17APPENDIX B — SCS/DCA COMMAND SUMMARY
Command: Begin Emphasis (BES)
Format: 2B D1 nn 8A ca
Printers: 3812
Action: Activates the continuous emphasis function. It
emphasizes characters by overlaying them with the same
pel pattern displaced by two pels horizontally.
The ca parameter is ignored.
IBMEMUL: Same as IBM.
If BOLDTYP is set to PRINTER, the BOLD ON PFS is
sent to the printer before the text to be bolded. The
BOLDOFF PFS is sent to the printer after the text to end
the bolding. Normally these PFSs turn bolding on and off
at the target printer.
If BOLDTYP is set to BACK SPC, bolding is achieved
by printing each bold character in the following way:
Character - Backspace - BSBOLD1 - Character -
BSBOLD2. PFSs BSBOLD1 and BSBOLD2 are used to
perform small relative vertical movements to the right
and left, respectively, thereby offsetting the two
occurences of the character and creating a bold
appearance.
275EMUL: No operation.
Command: End Emphasis (EES)
Format: 2B D1 nn 8E xx
Printers: 3812
Action: Deactivates the continuous emphasis function.
The xx parameter is ignored.
IBMEMUL: Same as IBM.
Ends bolding mode previously started by Begin
Emphasis command.
275EMUL: No operation.