RE: Throttle cut for DX 7
When the programming, in a RC Radio, refers to a Switch, it is a Mechanical Switch, either a Momentary Switch, 1, 2, or 3 pole switch, or a Rocker Switch. It refers to a Knob as a Knob and a Lever is a Lever. There are Rocker Switches, on either side of the antenna, on the DX7. They can also be a Digital Trim or it can be assigned to do other things in a Programmable Mix. As you move up to higher end radios, many times, all the switches and levers can be assigned to any channel or function.
A software switch is usually a parameter you change the value for. I have not seen any reference to a software switch in any RC Radio manuals.