.prot and .unprot

Hello Is it sure that the encryption process : <QUX.exe> -ProtectSelections has been implemented? the process is similar a former well known SPICE software. I practiced a lot of encryption then. But with QUX.exe this does not seem to work (or is it me? that’s highly possible). All what my instructions do is the open the software and nothing more.
I would like to know if anybody has already tried the encryption in Qspice and what the outcome was. Thanks.

Works for me. But you don’t use QUX.exe but QSPICE64.exe.