Before each printer job is started the Selected Printer will be initialized.
This means that for a while the Selected Printer will be configured as the Default Printer, and its settings (paper size, tray, number of copies, etc.) will be changed to match the desired configuration for the printing job.
As soon the printing job is sent to the Windows printing queue, the Printer settings will be restored, and the previous Windows Default Printer will also be restored (unless the Selected Printer is the same that the Windows Default Printer).
When printing File Lists, there is one option to initialize the Printer before the File List start printing, and restore the original printing settings after the full list is sent to the Windows printing queue.
Notice that if other application tries to print to the windows Default printer, before HTMLPrint restores the Default printer setting, the printing job may go to the wrong printer.