A good point well made 

Ian

Not so sure about that, reading again the punctuation is non existent

I had initially thought the same as you as to why it would thought it needed in the macropump then  thought that would be one reason. Possibly its not but..... well it could be

Hood

Yes - I wondered if the macropump idea was to turn it off "immediately" if someone knew how to turn it back on via CB. I dismissed that as a "good" idea as I reckon that anyone who knew how to turn the menu on via CB would presumably know how to edit the macropump as well. Anyway that's all academic - as has been said - it's really not a good idea to hose Mach with a constant assault from the macropump.

Ian