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  Support :: Frequently Asked Questions :: Hydraulic Programs 1.x DOS
Printing problem: only blank pages appear.

Most likely you have not entered the right port for your printer. If you are not aware whether your printer is on a serial or parallel port or the number of the port, please consult your technician.

To enter the type and number of your printer's port, run Hydraulic Programs. In the main menu, press the button Preferences.... Select port 0 if your printer is installed on LPT1, port 1 for COM1:, 2 for COM2:, and so on.

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