A print controlling device for transmitting printer controlling
information to a printer connected thereto is configured such that print
setting data is generated based on desired print settings which may
include operational control setting data in accordance with a setting by
a user. The print controlling device is capable of generating print data
including the print setting data as header information thereof, and
converting the print data to the printer controlling information. When
the print data is converted, it is judged whether the print setting data
included in the print data contains the operational control setting. If
the print setting data includes the operational control setting, job
controlling information which corresponds to the operational control
setting is transmitted to the printer.