Lexmark All in One Printer - Manual (Page 113)

113 Using the Print and Hold Function
Use the buttons on the operator panel to enter the four-digit PIN
associated with your confidential job. The numbers next to the but-
ton names identify which button to press for each digit (1–6). As you
enter the PIN, asterisks display on the operator panel to ensure con-
fidentiality.
1 Menu 2 Select 3 Return 4
Go 5 Stop 6
Enter PIN
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