I've been using automation from back in the Pro Audio days. I used the Studio Mix back then. I can't say the W and R buttons have been even a slight problem. Actually for me its been rather convenient having them.
I am unsure of a reason for this thread. If we look back at the OP it is my understanding that Dave didn't know what R was for. That was answered. Now its about something entirely different in that some few seem bothered that by default reading automation is on. Really! Is that a real problem?
BTW Dave could have avoided this thread if he had just read the manual. Now there is a constant help showing what everything does. Apparently Dave can't be bother to have that on either.
I have always thought of the automation in Sonar as being one of its strengths.