## Input/Output Device Driver Reference

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### Code Page Support

The parallel port device driver provides code page support through the OS/2 character device monitor mechanism (for example, the spooler). In addition, three printer IOCtl commands support code page and font switching so that an application has the ability to change the active code page and font in the middle of its print job.

Because the spooler is no longer a character monitor, code page and font switching is handled before the parallel port device driver receives the data. This section remains for compatibility.