Epson EcoTank Pro ET-5150 Wireless All-in-One Supertank Printer - Manual (Page 155)

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You see this window:
4. Select the checkbox for the settings you want to lock. To lock all print settings, select All Document
Settings .
5. Under Advanced Settings , select the setting option you want to use for each locked setting.
6. Click OK .
PCL Driver Locked Setting Options
Parent topic: Printing with the PCL Printer Software - Windows
PCL Driver Locked Setting Options
Select the options you want to use for any locked print settings.