@johku:
Basically, it means replacing a keystroke of e.g. Ctrl + A with just plain A. It means that one does not use modifier keys, such as Ctrl, Alt, Shift, or their combinations.
Thank you Johku, for clarifying that! (note to my self: don’t always think difficult ;-))
I was under the impession most people use the Dx bindings for most stick switches. But of course there are as many setup/configurations as BMS jockeys 😄