Dan,

What do you think about making this change to memedit.py

-        if duplex == "" or duplex == "(None)":
+        if duplex == "" or duplex == "(None)" or duplex == "off":
            hide += [self.col(_("Offset"))]

It just me "off" should be hidden just like "(None)".

If you agree, would you do it or do you want me to submit a patch?

Jim