## Presentation Device Driver Reference for OS/2

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### BIDI_RESPONSE_FMT(Dh)

BIDI_RESPONSE_FMT(Dh) sets the format of the printer-to-host messages. The spooler queries the protocol converter with BIDI_Q_RESPONSE_FMT(8018h). The spooler then passes this information to the port driver, using BIDI_ RESPONSE_FMT. This allows the port driver to determine printer response message boundaries.