Texas Instruments 4000M - Manual (Page 67)

Using a Password
Hint
If you are not going to use a password, remove the PW. EXE program from
your hard disk to prevent someone else from defining a password.
To remove the program, at the MS-DOS prompt type DEL
C:\UTILS\PASSWORD\PW** and press Enter.
You can restore the password program using the System Recovery diskette that
came with your system.
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