I’ve been intrigued by the expression “a mixed mechanism inducing a deontological imprimatur is required” but I have been unable to interpret it. The context in which it is used, too, is a bit difficult to understand for me.

Is there an available end-user level clarification? Thank you very much.

Mainframe z/OS does not use the ASCII standard; it uses IBM's Extended Binary Coded Decimal Interchange Code (EBCDIC) character encoding - actually many different incompatible versions